Historical IBM
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See also:
IBM Archives - IBM's own history site, with pages on many of their significant systems (see especially the "Exhibits" and "Documents" sections).
All about the IBM 1130 Computing System - The IBM 1130 Computing System, introduced in 1965, was IBM's most "personal" system to date. This site celebrates and documents that system.
Computing at Columbia Timeline - Summary of Columbia University's dense, more than 50-year-long history of academic use of IBM systems. Includes links to descriptions of most of the systems they have used.
IBM 1620 - Homage to the venerable IBM 1620 computer.
IBM 360/370/3090/390 - A condensed history of IBM mainframes and their operating systems from System/360 through System/390.
IBM Advanced Computing Systems - A description of the first superscalar computer system - the IBM ACS project in the 1960s.
IBM Stretch - A brief description of the hardware parallelism of the IBM Stretch computer (also known as the IBM 7030).
Lawrence Wilkinson's IBM 360/30 Saga. - Description of the resurrection of an abandoned IBM system 360 model 30 mainframe computer, stored in a warehouse, into a working machine, by a group of enthusiasts. Help build the largest human-edited directory on the web.