• Please review our updated Terms and Rules here

Best books on early mainframes

Campbell-Kelly, Martin, ICL: A Business and Technical History, 1989, 0-19-853918-5

Huh, that has got a little expensive.
It turns out that it's available on loan from the Internet Archive, for free:


Interesting, but not $75 USD worth. End in 1984 when it became part of the STC Group.

I used the free Thorium reader under Win10. No problems. I was originally going to try the encrypted PDF but when Adobe threatened to review my entire file system and possibly "take over" other files I, umm, declined the opportunity. Caveat emptor!
Based on the recommendations I have picked up the other LEO book and Men of Univac. However if people want to say any more I am always looking to expand my collection.