Steel, T. B. Jr., "Beginnings of a theory of information handling"

[ACM] CACM 7(02) (Feb 1964) includes Papers prese (1964) [ACM] CACM 7(02) (Feb 1964) includes Papers presented at a Working Conference on Mechanical Language Structures, Princeton, N. J., August 1963  

Languages mentioned L-hat {1961} SHARE Information Algebra