Letter, A. J. Perlis ->A.P. Ershov, 24.04.1959
Letter, J. Carr III->A.P. Ershov, 15.05.1959
Letter, E. J. Guerin->A.P. Ershov, 19.05.1959
Letter, Unknown Author->A.P. Ershov, 18.02.1959
Telegram, J. Carr III->A.P. Ershov, 18.05.1959
Letter, L. Kalmar->A.P. Ershov, 18.05.1959
Letter, P. Ivey->A.P. Ershov, 18.05.1959
Letter, A. J. Perlis ->A.P. Ershov, 26.05.1959
Letter with attachment, J. Carr III->A.P. Ershov, 22.05.1959On the preparation of Ershov's visit to Chapel Hill; attached is the announcement and the latest program version of the conference
Letter (hand-written), D. Tizard->A.P. Ershov, 23.06.1959
Letter, J. H. Wegstein->A.P. Ershov, 25.06.1959
Letter, 15.06.1959
Letter, 08.07.1959
Letter, A. J. Perlis ->A.P. Ershov, 14.07.1959informing of the talk with academician Dorodnitsyn about Ershov's visit to the USA; suggesting the new program of the visit discussed with Dr.Carr
Letter with attachment, J. Carr III->A.P. Ershov, 22.07.1959
Letter, J. Carr III->A.P. Ershov, 30.07.1959
Letter, J. Carr III->A.P. Ershov, 05.06.1959
Letter, F. M. Verzuh->A.P. Ershov, 06.08.1959
Letter, J. Carr III->A.P. Ershov, 13.08.1959Regretting that Ershov could not come to the USA, and sending interesting papers from the last conferences
Letter, E. J. Guerin->A.P. Ershov, 19.08.1959The author sends the copy of the Datamation journal with Ershov's article which he appreciates very much; he discusses future cooperation and asks for assistance in getting in touch with representatives of other Soviet institutes
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