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20 - Acquisitions - Calculators: Kings Point Model KP-460, Kings Point SC-11, TI SR-56 Programmable SLIDE-RULE, Lloyds Accumatic 999 Microelectronic Slide Rule, APF Mark 8601 Scientific Slide Rule 20 - Ephemera - Added Venus Perfect Drawing Pencils Ad with Slide Rule 20 - Novelty - Added Ruxton Multi-Vider Slide rule pencil. 20 - France - Added Framed Circular Slide Rule, Unknown Manufacturer, Phot0 provided by Nathan Zeldes in Jeruselum, Israel 20 - Post - Added[Replaced] Post 1447 Made In Occupied Japan S452, Leroy Hausler Collection. 20 - Aristo - Added Dennert & Pae (D&P) No.21 Elektro Log Log. 20 - KE_Standard - Added[Replaced] 4088-3 Polyphase Duplex sn137431 1927, Gift of Ellen Hathaway. Gift Of Leroy Hausler Collection 20 - KE_Standard - Added K&E 4092-3 Log Log Duplex sn282613, 3 Patent Dates (Pat. 22, '08 - April 1, 1924) Gift Of Bill Boas 20.01 - Military - Added Howitzer 155mm High Angle 7R Charge Vietnam Era slide rule Oct1972 to existing set. 20 - KE_Standard - Added N4083-3 sn833117 Vector Log Log bio info, Belonged to Claude Ellis Johnson (1918-2003) NASA Engineer, Huntsville, Alabama. Gift of Phil Stanley 20 - British - Added [Replaced] Simplon Bi Lateral Log Log [S107]. Best known as an appraser on the PBS series Antique Road Show. Updated 20 - Received donation from Michael Vinarcik.

various sources 20 - SR_Patents/GB and BE - Added Ruxton Multi-Vider Slide rule pencil 20 - SR_Library/Post - Added Post Model 1464 8inch Binary Circular Slide Rule. 20 - KE_Specialty - Added 4095-3 Merchant's Slide Rule with PDF of Manual and Cooks Radio Rule (no model number). Bachelor collection 20 - Pickett- Added Pickett N800-ES Log Log Speed Rule, Gift of John Kachold 20.01 - Received gift of Pickett N800-ES Log Log Speed Rule, gift of John bought during high school. 20 - Calculators - Added 3 Silver-Reed Slide Rule Calculators using photos from other sources (attributes noted). 20 - The ISRM oversite committee authorised the purchase of a few Electronic Slide Rule Calculators of historical significance. Notes from daughter, Claudia 10/15/07 20 - SR_Library/KE - Added M345 K&E Polyphase Duplex Trig No. 20 - Aerospace - Added Goble Airline Pilots Flight Computer. 20 - KE_Standard - Added[Replaced] 4056 Favorite sn818452 [S053] gift of Ed Millis, 4056 Favorite sn563371 black Cursor, gift of Pamela Eaton. Gift of Phil Stanley 20 - Misc Japan - Added new brand Taisho Kogyo No. Gift of Phil Stanley 20 - Hemmi - Added Geotec 341-3690 Versalog II. 20 - Orient/East Asia - Added[Replaced] Flying Fish 1200 Duplex Log Log. 20 - Received gifts of 18 slide rules/slide chart from the collection of Phil Stanley of The Analytical Engine, Worcester, Massachussets. 20 - Lawrence - added rare 10-B with magnifyiong cursor and 8-B artwork on the back 20 - Faber - Added A. Faber Castell 1/60 Mannheim date code June 1940 20 - Post - Added(replaced) 1450 Versatrig for dc TD1953. (S075) 20 - Hemmi - Added 251 MIOJ Cursor, for Mechanical Engineer dc DC1953 20 - Misc_USA - Bruning 2401 Pocket Slide Rule Texas Instruments Promo.

20 - Pocket Watch - Added scan of 1926 Fowler Calculator parts breakdown 20 - Calculators - Added Kings Point KP-460 (1975), Kings Point SC-11 and SC-44 (1974) 20 - Calculators - Added Enterprex SR-65 w/manual (1975), Silver-Reed SR82S (1975),and ads and articles about calculators in 1975 20 - Acquired Electronic Slide Rule Calculators: Qualitron 1144 Slide Rule, Corvus 411 Slide Rule, Kings Point SC-40 Scientific and Kings Point SPM-100 Slide Rule. 20 - SR_Library/Misc Europe - Added Nestler nr.28 Geometer and Aristo 0958 Surveyor. 20 - Misc USA - Added Novatni Merchant's Slide Rule. Gift of Phil Stanley 20 - Misc USA - Added Gisholt Time Computer (plastic film construction) and Gisholt Logo. 20 - Received donations from Frederick Sauter and Glenn Borland 20 - Faber - Added/Replaced Faber 63/82 and 63/83 pocket slide rules in retail package. 20 - Received gift of a slide rule collection used by Robert N. Contributed by Douglas Harland 20 - Pickett - Added scans of Arizona newspaper articles about Pickett in Nogales.

20 - Received electronic slide rule calculators (pre-1978) through ISRM aquisitions, to be added to the archives. 20 - Ricoh - Added[Replaced] Lafayette 99-7030 dc M. Gifted by Donald Bachelor Collection 20 - Patents - Added lide rule pencil patents to databases: GB, DE, FR and US. Gift of Phil Stanley 20 - British - Added brand catagory and refrigerant slide rule for Imperial Chemical Industries (ICI). Contributed by Douglas Harland 20 - SR_Brand Index - Added T & T Electric Manufacturing.

20 - Calculators - Added over 50 images of calulator Ads found in the University of Michigan Digital Archive from 1971-1980. sn0180673 ATA3781 (repair with TI-35) 20 - Acquired Slide rule calculators.ISRM Scanning Procedure Screen Capture Jim Cerny has now begun to host his collection on the ISRM Associates page beginning with a tribute to Ed Chamberlain. 20 - SR_Whos Who - Added Walter Richard Evans (1920-1999), inventor of the Spirule 20 - Misc USA - Added The Spirule Co. Petersburg, Russia 20 - Received a donation from Mark Mc Carty 20 - Received gift of slide rules and books from the Terry Whitsel of Loveland, Colorado 20 - Created a Facebook Page "ISRM". 20 - KE_Standard - Added K&E N4080-3 Loig Log Duplex Trig sn743809 Laminated Mahogany bio of original owner John Robert Baumann 20. 20.01 - Received gift of Jason 801 from Michael Banks.catagory and two examples of the Spirule, Root Locus slide rule, one from Nathan Zeldes 20 - KE_Standard - Added 4088-3 Polyphase Duplex c1927 belonging to Peter Brooks Morton (c1938-2017) with bio. Search ISRM or @sliderulemuseum 20 - Received approval from Amazon to be a supported charity when you buy using on smile.20 - Hemmi - Added two variants of 50W. - New acquisitions received 20 - Received donations for slide rule adoptions from Philip Rodley, New Zealand and 20 - Duplicates For Adoption - Added K&E, Pickett, Dietzgen and Faber-Castell 20 - Received donation from Michael Mjelde, a continued Patron of the Museum 20 - Duplicates For Adoption - Updated with available circular slide rules to the Adoption list. Agreed to send 3 slide rules in trade to friends children 20 - Pickett - Posted Model 114C Pocket Metric Conversion. 20 - Received gift of slide rules from Janet Dupont of Wacona, Minnessota.ISRM is now has 501(c)3 (A57 - Science and Technology Museums) status through the State of Colorado.Colorado ID Number 20181884948, IRS EIN 83-2486423, operating as a non-profit corporation as International Slide Rule Museum dba ISRM. which disturbs some visitors and may have prevented them from perusing the site or downloading files, or making needed donations.

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