| www.sliderules.clara.net | This site of R. E. Manley contains his collection, together with detailed descriptions and good photos of the slide rules. Furthermore there are some manuals and statistics. |
| www.sphere.bc.ca/test/2archives.html | On this commercial site of Sphere Research Corp. is a very big archive about slide rules of various makers. Nearly all importand makers worldwide are present. |
| www.sliderule.ca | This site presents the collection of Eric Marcotte, with descriptions of the slide rules, and some more information. |
| www.uni-greifswald.de/~wwwmathe/RTS/node5a.html | Perhaps the biggest German site, maintained by the University of Greifswald, which collection is presented. Every slide rule has a short description and an overview over the scales. Only in German. |