Sammet, Jean E. "History of IBM's Technical Contributions to High Level Programming Languages" pp520ff

[IBM] (1981) IBM Journal of Research and Development, 25(5), September 1981 25th anniversary issue   Jean E Sammet

Languages mentioned APL {1960} Array-centered programing language Commercial Translator {1959} COMTRAN {1958} Commercial Translator CPS {1965} Conversational Programming System FORMAC {1962} FORmula MAnipulation Compiler FORTRAN {1954} Backus et al high-level compiler GPSS {1959} General Purpose Systems Simulator PL/I {1964} Programming Language One PRINT I {1956} Load and go scientific calculation system QUIKTRAN {1964} FORTRAN-like, interactive with debugging facilities Scratchpad {1971} General purpose interactive symbolic maths system Vienna Definition Language {1965} Formal language description language