In April 1962 a New York symposium gathered early computer-science research on mathematical automata, formal languages and the limits of computation; Polytechnic Press published the proceedings the next year. In 1969 Jean E. Sammet compared the early high-level languages, COBOL, FORTRAN, ALGOL and LISP, in a book whose jacket draws them as a Tower of Babel. Away from the computer, Claudio Marcello’s papers on major dams were gathered in a large commemorative volume in 1969, and in 1935 the Second International Congress of Rural Engineering met in Madrid to report on agriculture, mechanization and infrastructure.

The proceedings of a New York symposium on automata, published in 1963.

Jean E. Sammet’s 1969 history of COBOL, FORTRAN, ALGOL, LISP and the rest.

Claudio Marcello’s papers, plans and photographs, collected in 1969.

The reports of the 1935 international congress of rural engineering.
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