I am trying to contact authors of papers that have appeared in The Algol Bulletin, as I am starting to produce an electronic version and need to get the authors' permission to reproduce their copyright material digitally.The whole archive is now freely available at the Computer History Museum. It is also accessible through the ACM Digital Library, who provide PDF documents of the many articles; but to access this resource you need to be an ACM DL subscriber.If you contributed to The Algol Bulletin, please contact me at Brian.Wichmann@bcs.org.uk or c/o Peta Walmisley, British Computer Society, 7 Mansfield Mews, London W1G 9NJ.
W. B. Kloke of The University of Dortmund has converted the Revised Report on the Algorithmic Language ALGOL 68 to HTML (and also to pdf and TeX). (As of May 2007, Kloke's pages at Dortmund are unreachable, but there is a copy of the HTML version at BURKS.)
Karl Kleine maintains a web page about historic documents in computer science, which includes some information on Algol 68.