Green, Bert F. Jr., Wolf, Alice K., Chomsky, Carol, Laughery, Kenneth "Baseball: an automatic question answerer"

Feigenbaum, E. and Feldman, J. (eds.) (1963) Feigenbaum, E. and Feldman, J. (eds.) "Computers and Thought" MIT Press, Cambridge, MA, 1963  

Languages mentioned BASEBALL {1961} Constrained natural language for querying attribute value pairs