TRANQUIL - 1966. ALGOL-like language with sets and other extensions, for
the Illiac IV. "TRANQUIL: A Language for an Array Processing Computer",
N.E. Abel et al, Proc SJCC 34 (1969).
TRANQUIL Programming Language
http://www.programming-languages.co.uk/tranquil.html
Large list of computer programming languages arranged alphabetically, with explanations.