<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> </head> <body bgcolor="#ffffff" text="#000000"> I have recently been working on an ALGOL page for the Software Preservation Group web site:     <a class="moz-txt-link-freetext" href="http://www.softwarepreservation.org/projects/ALGOL/">http://www.softwarepreservation.org/projects/ALGOL/</a> It covers the evolution of the language including International Algebraic Language (Algol 58), Algol 60, and Algol 68. It also covers many implementations (especially of Algol 60), dialects, and offshoots.  Due to the efforts of a number of people around the world, source code exists for some historic implementations, including: <ul> <li>Burroughs 205 (Knuth)</li> <li>Burroughs 220 (Erdwinn et al.) </li> <li>Electrologica X1 (Dijkstra and Zonneveld)</li> <li>Electrologica X18 (Kruseman Aretz)</li> <li>Elliot 803 (Hoare et al.)</li> <li>G.E.C. process control computer (Higman)</li> <li>GIER (Regnecentalen) (Naur et al.)</li> <li>Whetstone (English Electric) (Randell and Russell)</li> <li>ZEBRA (Netherlands PTT/Standard Telephones and Cables) (van der Mey) (binary only) </li> </ul> There is also source code for Algol W (Wirth's proposed successor to Algol 60) and for several Algol 68 implementations (although I'm still working on Algol 68). A scanned copy of Randell and Russell's Algol 60 Implementation is available (Brian obtained permission from the current copyright holder, and Al Kossow provided a scanned copy).  As always, I welcome comments and suggestions. Paul </body> </html>