Daniel Swerdlow is a second-generation engineer from New York City and has degrees in electrical engineering from New York University and Michigan State University. We designed and built a simple radio together before I was out of grade school. " Seller 99.8% positive. Air Products & Chemicals in 1960, rose to the head of design engineering department and retired in 1983. But even without it, it's a nice old rule. He worked at Allis-Chalmers out of college, then Boeing where he worked on the Saturn 5 rockets, then Westinghouse for 32 years where he retired in 2000 as the Manager of Manufacturing Engineers. He became a licensed Professional Engineer. For his writing, he received an Honorary Citizenship of the State of Texas from Governor Price Daniel in 1961; a It tells the story of a company and industry that evolved over five Information about your use of this site is shared with Google. $62.50 previous price $62.50 + shipping. They also swapped the red K&E text with the patent text. '44", and the rule probably dates to 1940. After graduation he enlisted in the Air Force with duties as a musician, stationed at Keflavik, Iceland. Data Source. The top of the base is marked in red: PAT. It was constructed inexpensively and was intended to be replaced once students had mastered the basic operations. After college, he joined Geophysical Service, Inc., predecessor of Texas Instruments (TI), and in 1950 he worked as an Electrical Engineer on military electronic equipment. Martha acquired her husband, Bill grew up in the Bronx, New York and served in the U.S. Navy from 1962 to 1966, on ships with the 2nd and 6th Fleets, and under Commander, Fleet how to do simpler calculations with a slide rule. He was a member of U.C.L.A. He was teacher, coach and administrator at four schools in the District Garfield High School, Horace Mann Junior High School and Southgate and Bell High Schools. shown donating his personal slide rule to ISRM. Keuffel & Esser Co. Stanley, William Ford Description This rule consists of an outer wooden cylinder that both slides up and down and rotates. 's 1946 (undefeated) and 1947 football teams. Mr. Campbell went on work for Registered Professional Engineer. On the reverse side, everything about the label is the same, but the log scale has been modified. Author of several books including TI, the Transistor and Me which talks about his career as an engineer at TI and was endorsed by Jack Kirby, the inventor of the micro chip at TI and a Nobel Laureat. Vintage Keuffel & Esser 20" Slide Rule ~ Special Use w/ Unusual Scales, 1900 Pat $50.00 + shipping. Note: He is listed in, Arnold Davidson Straussman (c1908-1983) was an electrical engineer who loved the elegance of math, as well as science and the arts. Keuffel and Esser, Specialty Scales: KEEP ISRM FREE! Wood. He was African He used it to show me how a slide rule worked. He loved math in its pure forms, but also the practicalities of what you could design and build with it. Starting bid: US $15.00. During this period in time, radio was invented by Marconi who beleived that radio was usefuk only for communication between ships at sea. She is actively selling off John's collection, C $63.13. Please feel free to contact me if you have any questions or concerns. John Prince Ed transferred in June 1954 to the Semiconductor organization and stayed with TI for 37 years. But after I made new blocks for the cursor and gave the rule a good cleaning, it's back in good form. Ed attended Rice University in 1946 where he used a K&E 4081-3. He has written two books on antique measuring instruments, and numerous articles on instruments and technology, and has given several talks on these subjects. Opens image gallery. worked at Lawrence Radiation Laboratory at Livermore where he married fellow physicist Ruth Mary Farwell the University of Pittsburgh. This nice rule arrived in rough shape: the cursor had crumbled and rusted, and left a stain on the rule. Field Artillery Military Slide Rule, War Department Technical Manual, TM 6-240 - 1945 - This instruction manual is for a special slide rule for use by the military for artillery calculations. Mr. Glen Williams was born November 4, 1918 in Adelaide, South This K&E 68-2273 green leather sleeve was ordered as a replacement for the one that came with the slide rule. It apparently was used as an exhibit label around 1966 at the Museum of Science & Industry in Chicago, the previous owner of the related … Picture Information. Also see Rarities Slide Rule gallery for older or rare K&E's not shown in this gallery. Now that I have the manual, I guess I need to collect a GP12 rule! 100% Satisfaction with on-time delivery guaranteed. Pulling this from its case is like drawing a sword from its scabbard. David's first slide rule was a circular Pickett 101-C, which he acquired in high school. +C $13.95 shipping. John Prince's collection after his passing in 2005. 's 1947 Rose Bowl team and was selected to be a member of the West team in the 1947 Hula Bowl. Philip Stanley retired from engineering to become a full-time dealer in and appraiser of antique scientific instruments and tools as The Analytical Engine. 3-D: 31.8 x 5.1 x 0.6cm (12 1/2 x 2 x 1/4 in.) For more detail, dating and related history go to the This model is all wood. periodicals. Carolyn (randall) Diviacchi writes: "This slide rule belonged to my father, Edwin Benjamin Randall, Jr. who Ed has also written a book on hobbies Hither, Thither and Yawn. First, it is overall wider, 28mm instead of 25, with the extra space allocated a bigger slide with a large gap between the B and C scales on the slide. In 1913, the 4053-3 had a framed indicator window, which blocked the view of portions of the slide rule when making calculations. Keuffel & Esser Co., Hoboken, New York, sold and manufactured slide rules, drawing instruments and other technical supplies. K&E made some of the best slide rules. Some samples of this slide rule are marked with the K&E logo and others with American Blueprint Co. name. He selected tested and selected papers to be purchased by the U.S. hours. $55.00 + shipping. Beyond that, I can't place the date. The serial number on this N4041, 112404, dates it to around 1925. Glass. Keuffel & Esser included it on slide rules from the 1920s to the 1950s. Approximately C $19.16 (including shipping) [ 0 bids] Your max bid: Place bid. Keuffel & Esser Co. It also has a low serial number, 032215, which suggests manufacture shortly after K&E rolled over serial numbers in 1955. K & E Keuffel & Esser Slide Rule 4187S Log Log DUPLEX DECITRIG Box & Leather . From its serial number, 374487, it can be dated to 1948-9. They were accurate, looked good, and worked well. The construction of the rule is definitely K&E style. Phil appeared on the Antiques Road Show on PBS, as an appraiser, in 2012, 2013, 2014. By using this site, you agree to its use of cookies. Engineers walked around with these clipped to their breast pockets back then. Credit Line. Manufacturer. in Gaithersburg, MD. Dr, De Forest believed that radion communication between land based entities was possible and set about to prove his theory. Donald Capp (1922-2004)was a veteran of World War II and served in the U.S. Navy aboard the light cruiser, U.S.S. Wallace Kane used the above 20 inch slide rule while at Lawrence Radiation Laboratory at Livermore (now LLNL) California. This 4041 has the celluloid cursor blocks that replaced the metal ones in 1914-1915 model (above), and it doesn't have a serial number so it has to antedate the 1922 model below. It was given to him by an engineer working on the early phases of the Atlas Missile Project for Martin Marrieta. Esser became the largest manufacturer of slide rules in the US. The case is beautifully … manufactured slide rules, drawing instruments and other technical supplies. The front of the base has DF and D scales, with CF, CIF, and C scales on the slide. K&E tweaked the design of the 4053-3, above, moving the K scale onto the bottom of the stator and employing a better cursor. Instead of inscribing the scales on celluloid laminated to wood, here the scales are inscribed directly on the wood itself. Materials. The label in the case says "W.A. This rule was produced before K&E started using serial numbers in 1922. I guess for symmetry, they gave up the last centimeter, too. gift. … Kilby (later: Moira Kane) (1921-2007) (Ruth also has a slide rule on display at ISRM). Picture Information. K&E 4080-3. George Washington Honor Medal from the Freedom's Foundation at Valley Forge in 1964; and the 1982 K&E fixed this problem by making the "Frameless" indicator. $29.99 + shipping. On the usual rule, the high end of the C/D scales gives tic marks in .05 increments: 9.05, 9.1, 9.15, 9.2, etc. hour. Pasadena (CL65) from May 25, 1943 to Feb. 15, 1946. Move … Buy It Now. culminating in a profession of healing arts and counseling. Gregory J. Patterson (1935-2014), of Towson, Maryland, obtained this slide rule soon after high school and used it in his career. This one bears the SRT scale (radian sine & tangent), which first appears in a September 1955 revision of the K&E manual. After graduating from Pratt Institute, NY in 1929, he was employed by the Jersey Central Power and Light Company until 1940. Slide rules … The metal indicator is marked, "Pat. We designed and built a simple radio together before I was out of grade school. " Dimensions. obtain his masters degree in physics from the University of Wisconsin in Madison, WI. For example, in 1941, this rule sold for only $1 while a 4041 went for $6.50. Air Mediterranean at Naples, Italy. It may have been assembled by Keuffel & Esser executives when the company donated two of its early 20th-century linear dividing engines (335265 and 335266) to the Smithsonian in March 1971. Arnold Davidson Straussman (c1908-1983) was an electrical engineer who loved the elegance of math, as well as science and the arts. The photo in the newspaper article is Joseph Graf in Binghamton sending a communication to S.S. Stone in Scranton. It is an honor to donate his collection to the International Slide Rule Museum." His slide rule collection specializes in Picketts Keuffel & Esser 4071 Duplex Slide Rule. By 1976, Keuffel & Seller 99.8% positive. The dreaded KERCS (Keuffel & Esser Rotting Cursor Syndrome) struck virtually all K+E slide rules manufactured in the decade or so after World War II. Another beautiful K&E rule, bearing hyperboic sine (Sh1, Sh2) and tangent (Th) scales for electrical engineers. He won numerous awards in Ebasco's Photography Club competitions. Note: He is listed in, William (Bill) Augustus Boas, is an independent journalist and writer. Unfortunately for the company, the report failed to predict that C $16.12 shipping. (In the late 19th century, K&E numbered the instrument as 1741.) Ink. Pickett & Eckel N600 T 6 Inch Slide Rule Model Log Speed Rule With Leather Case. RARE K & and E Keuffel Esser Slide Rule + Pick: $17.17: 22-Oct-2007: 2: K&E #4161-3 … On the double length rule there's room for 0.02 increments: 9.02, 9.04, 9.06, 9.08, 9.1, etc., allowing you to reasonably get accurate answers to 3 full significant digits. Wallace was born in Wisconsin (1930), used slide rules starting with his under graduate studies at Lawrence College in Appelton, Wisconsin. After graduating from Pratt Institute, NY in 1929, he was employed by the Jersey Central Power and Light Company until 1940. She joined the Oughtred Society and has since attended several OS meetings, rubber which was I think at the time they were beginning to introduce The majority of his career was spent with Ebasco Services headquartered in NY. Then later with Ebasco Services headquartered in NY. Ed transferred in June 1954 to the Semiconductor organization and stayed with TI for 37 years. For K&E serial number dating use the link here to Ed Chamberlain's reference set of dating curves. After college, he joined Geophysical Service, Inc., predecessor of Texas Instruments (TI), and in 1950 he worked as an Electrical Engineer on military electronic equipment. Assuming "'07" was engineer Young's class year, it suggests the rule dates to 1904-1907. She used this one $41.75 + $12.99 shipping. These photos show an N4041 from around 1940 (per its serial number 768490) as versus the 1925-ish rule from above (shown at the top of each photo). Metal-framed cursors were discontinued in 1915, so it's earlier than that, too. This one is pretty simple: it easily slips on or off the existing cursor of a 4080 rule. I got this from a friend whose young son had gotten hold of it and somewhere lost the cursor. K&E went through the patent process to protect their investment into this innovation. Governors 1960-61 of Michigan Chapter of American Society of The rule is in a rectangular mahogany case marked in script on the top: Calculator. According to Joseph L. Soper, who worked at the K&E Salibury plant, K&E made the 4053 from around 1909 to the end of production of slide rules in 1976. They This Keuffel and Esser Deci-Lon slide rule is a model 68 1100 with 10-inch scales. 8.17.15". VINTAGE KEUFFEL & ESSER CO K&E SLIDE RULE Model 4053-3 LEATHER CASE,MANUAL,BOX. Esser mothballed its slide rule manufacturing equipment and sent it to the Smithsonian Institution. This is a basic "Mannheim" rule - just the A,B,C and D scales - but it's beautifully built like all of K&E's high end instruments. Free shipping on many items | Browse your favorite brands | affordable prices. Young, MIT '07, 356 Mass Ave." (A small "WAY" is also gently inscribed into the wood on the back.) Mouse over to … prior to high school. Item Information. $46.88. This gallery displays K&E specialty slide rules with special-purpose mathematical scales. This matches the size of the 4053, so maybe K&E was able to save money by having one construction size that they simply equipped with different scales for the two models. $50.00 + shipping. Keuffel & Esser slide rule cursors are notorious for their breakage. Board of This cardboard describes a Thacher cylindrical slide rule with a magnifying glass that was manufactured and sold by Keuffel & Esser of New York in the early 20th century as model 4013. He used this for 30 years as an engineer, first in aeronautics where he worked for Charles Lindberg, and later as a refinery designer in the petroleum Industry. You could call it ungainly, but it had advantages. In 1953, he began a 37 year career with Los Angeles Unified School District. K&E made some of the best slide rules. He scratched his initials in the stock along with aids on the Log scales. Died September 13, 2004 in Americus, Georgia. Get the best deals on K&E Slide Rule when you shop the largest online selection at eBay.com. The May 1, 1914 edition of. Bruce was given this slide rule when he was in high school while his father, William M. Day, was stationed at Vandenburg AFB. and jokingly states "I have fulfulled.one of John's desires, to have me involved in his Bruce later became a career military officer who flew B-52 missions in Vietnam and later C130s as a member of the reserves, retiring as a Lt. Col. His civilian life was spent as a Patent and Trademark Attorny in Kansas City, where he still resides. sales capacities. Up for bidding is this Vintage Keuffel & Esser Log Log Duplex Decitrig Slide Rule Leather w/Case & Box #N-4081-3, Excellent condition Comes with original Leather Black Case and green box. Enter Lee De Forest, the self proclaimed "Father of Radio". Description: Chemist's Adjustable Duplex Slide Rule, 4160, made by Keuffel & Esser Company, New York, no date, circa 1936-1940. Appl'd For", as seen in the image. They're the 1914-15, 1922, 1925 and 1940 versions. K&E Catalog Page by Clark McCoy. When viewed side-by-side, you can see that the red arrow is about 1.5 times longer than the green one. in 1952-53. Restrictions & Rights. VINTAGE KEUFFEL & ESSER Co ENGINEERS SLIDE RULE 4070-3. This was my Dad's, Jim Wolfson's, slide rule at NYU. Her university education led her down Vtg K&E Slide Rule 10 Deci-Lon Model 68 1100 Leather Case Keuffel Esser Co 1960s. when he entered as a plebe in 1942. His name is marked on inside of sleeve flap. and he enjoys traveling to board game conventions. The green arrow is the un-magnified distance from 1.95 to 2.06 and the red arrow is the magnified distance. Keuffel & Esser N4080-3 (1) Greg's Slide Rules Images . The slide rule was sitting in a box ever since. degree and a Masters Degree in 1950 from California State University at Los Angeles and began a long career in secondary education. Condition: Used. C $47.28. He began public school but dropped out around sixth grade. $19.95 + shipping. He attended U.C.L.A. You can't really tell the difference between an answer of 9.02 and 9.03. The cursor is virtually identical to the previous model, only now (and from this point on) the 8-17-15 patent date is labelled on the bottom piece instead of the top. Fuller's Spiral Slide Rule was first listed in Keuffel & Esser… C $210.39. See K&E Standard Slide Rule gallery for slide rules with all-purpose scales for general engineering applications. On the face of the slide rule, the N is located on a separate line above the model number brackets (apparently, this was common on the smaller N4053-2s). This was followed very shortly after with a "Frameless indicator with plastic indicator bars". Search desired NSN parts in the world largest inventory. After graduation he The citation information for the manual is: Lyman M. Kells, Willis F. Kern, and James R. Bland, Slide Rule Manual: Log Log Duplex Decitrig, 4th ed. The plastic bars were marked, "K&E CO. N.Y. Pat. C $191.39 0 bids + C $12.76 shipping . He has done telecommunications engineering for major corporations and currently lives in the Washington, DC area and works at the United States Patent and Trademark Office. September 1955 revision of the K&E manual. He switched major to accounting and finance. National Air and Space Museum. Addthis Share Tools Vintage Keuffel & Esser K&E Slide Rule 4053-3 Polyphase Slide Rule w/ Case. K&E tweaked their rules quite a lot over the years. "Slide Rule Keuffel&Esser 4053-3 box,case,pape: $6.55: 05-Jun-2008: 3: Vintage Keuffel & Esser with Leather Case SLID: $6.50: 11-Jun-2008: 2: KEUFFEL & ESSER CO. BEGINNERS SLIDE RULE #4058: $6.14: 27-Jun-2008: 4: K+E SLIDE RULES: A Self Instruction Manual~BOO: $6.05: 23-Jun-2008: 4: 3 Vintage Lot SLIDE RULE Kueffel Esser TATA LA: $5.99 : 26-Jun-2008: 1: K&E KEUFFEL & ESSER SLIDE RULE … 21d 16h left (15/5, 11:24) SPONSORED. The version with this model number and these scales was offered between 1944 and 1959, although the all-plastic indicator was not introduced until 1954. Gift of George Rosen. It should have an all-glass cursor. Keuffel & Esser Co. Vintage Keuffel & Esser Slide Rule With Case Model 4092-3 USA. The rule is made of a shatterproof synthetic material while the indicator is made of clear plastic with metal edges. Interestingly, the fabric-wrapped cardstock case has no labeling, and the bottom of the cursor is imprinted "PAT.APPL'FOR". He eventually found work with the Deleware and Lackawanna Rialroad (D&L) as a telegrapher, and from that position rose up to become Chief Telegrapher with an office in Scranton, Pennsylvania. Plastic. (More info on right...). And, the L scale was modified to specify the range 0 to 1 instead of 0 to 10 some time between 1934 and 1940.. Just for fun, this picture shows 4 of the above 4041 variants from earlier (top) to later (bottom). $35.95 + shipping. Morton Margolin Prize for Distinguished Business Reporting from the Morton Margolin Trust administered by the Keuffel & Esser Company. This web site is provided to help slide rule and planimeter collectors understand the works of this great American manufacturing company. In 1936 K&E started using a thin frame to secure the glass cursor to the blocks. One of his interests was collecting slide rules, . Heating, Refrigerating and Air-Conditioning Engineers (ASHVE). This slide rule was issued to Reed W. Campbell (1923-present) by the United States Naval Academy, Annapolis, MD, Details about Vintage Keuffel & Esser K&E Slide Rule w/ Case n4053-3. He was trained in organic chemistry at Harvard, '46. Image not available. 1947 KEUFFEL & ESSER SLIDE RULE LOG LOG DUPLEX DECITRIG 4081-3 w LEATHER CASE. Vintage DB McIntire Keuffel Esser Co Slide Rule #642548 in Original Leather Case. White Metal. in 1891 and continued until 1976. The front face is printed with 13 scales: Sq1, Sq2, DF, CF, CIF, L, CI, C, D, Ln0, Ln1, Ln2, Ln3. slide rule collection".Martha lives in Tucson, AZ. Usage conditions apply . shipping. I love the way the edges of this rule are constructed - exposed wood with a plastic inlay. While there, he was an offensive and defensive lineman on U.C.L.A. Rule, Slide Catalog Number: 2009.006.0104 Collection: Keuffel & Esser Company Collection Credit: Museum Collections. Keuffel & Esser Co. He worked as the Business Administrator of the American Academy of Dramatics After his tour Image not available. Markings are in red and black. Often attributed to shoddy 1930's era celluloid, the problem actually appears to relate, at least in part, to use of threaded inserts cast into the body of the cursor bar. Martha H. Prince Ebasco assigned him to a number of domestic and overseas projects. Americans would live in domed cities (possibly influenced by Issac Asimov's robot novel Caves of Steel) Opens image gallery . A double-length version of the 4053. Vintage Keuffel & Esser Co. N.Y. Slide Rule #4081-3 Original Brown Leather Case . Ed is a generous donor of over a hundred slide rules, calculators and ephemera to ISRM. The indicator is glass with a plastic frame, of the style used by Keuffel & Esser between 1915 and 1937, based on the patent indicated by the mark on the top edge of the frame: K&E.CO.N.Y. He had 5 children. (/) PAT.8.17.15. The rarest of the variants is this 1914 Model 4053-3. In 1967, Keuffel & Esser, commissioned a study of the future. We know this rule dates to 1922 because of an odd feature. … Free shipping . Two brass rings lined with felt are inside this cylinder. or Best Offer. Many specimens may be found in the various ISRM galleries. Keuffel & Esserproduced slide rules and imported planimeters for over 100 years. various government interests including rubber and paper. His daughter, Judith King write: "He was an amazing man, and introduced me to astronomy and Scientific American as soon as I could read. 4080-3 4083-3 N4081-3 4181-1 4187S Manual 4041 (1903-1907) 4041 (1914-15) 4041 (1916-1921) 4041 (1922) 4041 (1925) 4041 (1940) 4041 Family Photo 4053-3 N4053-3 N4053-5 4058C 4185C Magnifier. I think there are more varied designs of magnifiers than of slide rules. (That's about $15 vs. $100 in today's money!). Mouse over to Zoom-Click to enlarge. The report predicted that, by the year 2067, American raised in Cambridge, MA by his parents and an only child. Australia. transitioned into CAD equipment in the 1980's. The 4053 went through dozens of changes during its lifetime. officer and is now retired from Civil Service. or Best Offer . These features suggest the earlier date to me. slide rules would be obsolete in less than ten years, replaced by the pocket calculator. He graduated from U.C.L.A. Vintage K & E Keuffel & Esser Co. 1947 Slide Rule. paths of Zoology, Secondary-education, Physical chemistry, Sinology and Psychotherapy, in 1949 with a B.S. He used the slide rules regularly and taught me as well as my sisters He worked on Airborne Early Warning and Control Systems (AWACS) while at Westinghouse. Ed attended Rice University in 1946 where he used a K&E 4081-3. K&E Deci-Lon 68-1130 Slide Rule, Leather Case and Hard Bound Instruction Book. The listing has ended. reinforcing rubber or radial tires. This site uses cookies from Google to deliver its services and to analyze traffic. Ed was at TI while the electronic 'slide rule' calculator was developed and is good friends with Jerry Merryman, the designer of the first calculator in 1967. Time left: 4d 08h . The rule features a table of formulas, constants and conversion factors on the reverse, exactly like the 1922 model below. His daughter, Judith King write: "He was an amazing man, and introduced me to astronomy and Scientific American as soon as I could read. The cylinder is covered with paper marked with a single spiral logarithmic scale graduated into 7,250 parts and having a length, according to the maker, of 500 inches (nearly 42 feet). Ken used this when he entered college in 1967 to study engineering. This 6" rule cost $10 in 1962. College of Business Administration of the University of Denver. $49.99 + shipping. The couple relocated to the Puget Sound area Vintage Keuffel & Esser K&E Slide Rule w/ Case n4053-3. In the 1920s, K & E started manufacturing slide rules. Established in 1884, sold rules from 1886, began manufacturing their own rules Dan has gifted most of his collection to ISRM to support the museum. Description This display of steps in the manufacture of slide rules also demonstrates the capability of dividing engines. worked At the National Bureau of Standards, Washington D.C., and then K&E introduced a frameless cursor around 1914-15, and initially mounted the cursor on metal blocks. in 1973 to work as a physicist for the Navy at Keyport, Washington for the next 33 years where he retired at age 75. Vtg 1939 Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule, Case W9CTY. National Museum of American History. This was one of James J. Pennell's personal slide rules used in his career. Vern with a Saturn 1B (1969) and with Mike Konshak(2009) What's odd about this rule is that it has short codes on the ends of the parts, as well as serial number 17862 - but only on the slide. Joseph became involved in the expirement as the D&L was in close proximity to De Forest's lab in New Jersey. Description This ten-inch mahogany duplex linear slide rule is coated with white celluloid and held together with L-shaped metal end pieces. interest led his parents to give him a K&E 68-1210 as a graduation Keuffel & Esser. He taught and coached football and wrestling in Corcoran, Ca. C $14.95. If you want more precision and can't make the scale longer, make the light longer. Greg went to Marquette University in Wisconsin and graduated with a BS in Mechanical Engineering. Over the course of their history Keuffel & Look for more specimens of his collection in the other ISRM galleries. This was my Dad, Jim Wolfson's, slide rule at NYU. His Martha continued John's interest in slide rules by being activily involved in the Over the course of their history Keuffel & Esser became the largest manufacturer of slide rules in the US. In 1897, Keuffel & Esser began to sell a slide rule for students. He once explained to me that he was working on the standards for tire They switched to using celluloid blocks by 1916, probably due to costs, but possibly also because those two hunks of metal add a lot of weight to an otherwise light instrument. His family writes: "Our father used and collected slide rules consistently throughout his life acquiring them from friends and at yard sales. Arts in 1968, and a press aide for a W. Averell Harriman political cause in 1969. C $17.85. Get a quote for part numbers 0C-4-271, 10 5633, 10-5351, 10-5353, 10-5357 of Keuffel And Esser Co at Just Parts Unlimited. Engineering slide rule Keuffel & Esser Co., New York, New York. He now lives in Wray, Colorado engaged in other writing and photography projects.