612 West 116th Street 21 April 2009

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April 21, 2009, four of the 1940s-50s engineering and technical staff of the IBM Thomas J. Watson Scientific Computing Laboratory (plus one spouse) visited and toured the building from bottom to top:

All four – Jean, Jim, Jack, and Dan – were together at Watson Lab the last half of 1950. I believe most, if not all, of them worked for John Lentz on the IBM 610, the world's first "personal computer" as far as anyone knows.

Jack is co-author of IBM's Early Computers [4] (MIT Press 1986), along with Charles J. Bashe, Lyle R. Johnson, and Emerson W. Pugh; and of IBM's 360 and Early 370 Systems (MIT Press 1991), with Pugh and Johnson.

Columbia University Computing History