The SAM76 programming language
Claude developed the SAM76 language just as personal computers became available; the original code ran under CP/M on the Intel 8080 (or perhaps even the 8008). For more history, see The RESISTORS and Trac.
Claude wrote in an email to someone:
"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."
Here is a (broken) 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.