The SAM76 programming language
SAM76 was a recursive langauge (not totally unlike LISP and Trac) that the R.E.S.I.S.T.O.R.S. used in its early years. In fact, the R.E.S.I.S.T.O.R.S. wrote a book about SAM76:
"Do you have a copy of the RESISTORS book, called the sam76 Language? The foreword was written by Nat, and the 'backword' details a lot of names, and some of the history. That was the major long lasting product of the RESISTORS and the book is still valid, and the sofware is available for a number of platforms including the source code. That is also in AOL (keyword sam76). If you want the book let me have your address and I will be delighted to mail you a copy. The artwork in it was done by Joe Tulloch. and the book has been available since 1976, and is banned from the Hopewell Township School system due to the saracastic comments about said system." - Claude Kagan
Here is a link to the sam76 self-extracting zip file for DOS and Windows, hosted at Dave Fox's R.E.S.I.S.T.O.R.S. web site. The resulting .exe file should be 1714153 bytes long. Lucky attendees of the May 1998 R.E.S.I.S.T.O.R.S. reunion received copies of the sam76 manual.