From: utzoo!decvax!cca!hplabs!hao!menlo70!sytek!zehntel!teklabs!azure!laurir@sri-unix
Newsgroups: net.wanted
Title: Re: Algol 68?
Article-I.D.: azure.1366
Posted: Sat Oct 23 09:30:17 1982
Received: Sun Oct 31 07:11:57 1982

Among Algol 68'ers, the definitive book is
  "Informal Introduction to Algol 68 (revised)", by C. H. Lindsey and
  S. G. van der Meulen, from North-Holland Publishing Company.
This is the tutorial which is officially sanctioned by the language
  designers.  There's also a language definition, the "Revised Report",
  but for practical purposes it's unreadable.
You can get this in paperback cheap.
Be sure to get the *revised* book; the non-revised one describes a
  dead language.