BBN Butterfly Parallel Processor: Chrysalis Programmer's Manual
Butterfly Parallel Processor: Tutorial for Chrysalis Release 3.0
BBN Advanced Computers, Inc.; Bolt, Beranek and Newman, Inc. (BBN)
Version 3.0, April 28, 1987, on title page; includes August 20, 1987, update. Tutorial is dated July 16, 1987.
Gift of BBN Technologies