Slide Rules - Musharof Chy
The Oughtred Society
Membership group dedicated to the history and collection of slide rules.
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.
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 s...
The Slide Rules
A hyperlinked history of slide rules, details of the author's personal collection, and contact info...
Slide Rules
Dedicated to one man's collection of slide rules (and includes a photo gallery), plus a few links f...
HP Museum - Early Calculators
Some non-HP calculators that were introduced anywhere from centuries ago to the late 60's.