http://locomat.loria.fr - The LORIA COLLECTION of MATHEMATICAL TABLES

http://www.mechrech.info/ - von Stephan Weiss: Beiträge zur Geschichte des mechanischen Rechnens
 
http://www.rechnerlexikon.de/artikel/Cyclopedia_of_logarithms
 
http://www.rechenschieber.org/ - Seite der deutschsprachigen Rechenschiebersammler

http://www.17centurymaths.com/ - Some Mathematical Works of the 17th & 18th Centuries, including Newton's Principia, Euler's Mechanica, Introductio in Analysin, etc., translated mainly from Latin into English. Most of the translations are from Latin by Ian Bruce, with some papers by others.