Appendices, 01.05.1959 of the Proceedings of a Symposium held at the National Physical Laboratory (Attendance List and Index to authors and contributions).
Handwritten notes, 01.11.1958(?)Note with telephone numbers; outlines of the paper opening lines.
Letter, R. H. Harris->A.P. Ershov, 01.11.1958(?)from the library of Mathematics Department of Division of scientific and applied research of National Physics Laboratory with request for assistance in scientific literature exchange
Letter, A.P. Ershov->B. V. Biryukov, 05.08.1986The author lets know of some information about an international symposium on Mechanization of Thinking Processes taken place in England at the end of 1958.
Photo, 25.11.1958
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