Eric Marcotte, a Slide Rule Collector - A personal compilation of information on slide rules with much information on his own collection. Slide Rule Universe - Includes on line archive of rule information, plus a catalog of available instruments. The International Slide Rule Group at Yahoo! - A community of slide rule enthusiasts. Several hundred posts a month. SlideRule Trading Group - Private trading for members of the group. Slide Rules and Calculators - Images grouped by type. The Oughtred Society - Membership group dedicated to the history and collection of slide rules. Slide Rule Collection - Todd Tolhurst describes his collection, some with pictures. Peter Holland's Slide Rules - In German and English. Items for trade with descriptions of condition. Slide Rules from German Manufacturers - A collection of slide rules, with descriptions and pictures. Also, some links to other slide rule sites. The Slide Rules - A hyperlinked history of slide rules, details of the author's personal collection, and contact information. Slide Rules - Dedicated to one man's collection of slide rules (and includes a photo gallery), plus a few links for those who want to find out more about them or where to buy one. HP Museum - Early Calculators - Some non-HP calculators that were introduced anywhere from centuries ago to the late 60's. Napier's Bones and the Genaille-Lucas Rulers - Presents Napier's Bones and the Genaille Lucas rulers in ready to print forms: Postcript and PDF. IM2001 - 7th International Meeting for Slide Rule and Calculating Machine Collectors - Munich, Germany, September 14 - 16, 2001. Giovanni Breda's Slide Rule Collection - Giovanni Breda shows his collection. A sheet for each rule is provided including high resolution images. Links to other collector's site are also provided. Slide Rule Museum - Dedicated to engineers past and present, this collection of slide rules and manuals have in excess of 1000 different items scanned full size and categorized by company or continent. Also offers a glossary of slide rule terms and links.