[jshier]

Can anyone recommend a more technical book on the design and operation of the Colossus? I've found Colossus, a collections of essays edited by B. Jack Copeland, but not much else, at least on Amazon. (Also interested in anything on Zuse's computers, as I've mostly studied the Atanasoff-Berry Computer and Eniac).

[jleyank]

How about this one, although it covers the context of the times…. https://www.amazon.ca/Colossus-Bletchley-Parks-Greatest-Secr...

[VogonPoetry]

There are a lot of articles written about early machines available from the (British) Computer Conservation Society. The CCS journal is available online at [1]. One article (with a link to a GitHub) discusses making an FPGA version of Colossus.

There are many articles written by people who were involved in early computing in the UK.

[1] <https://www.computerconservationsociety.org/resurrection.htm>

[a-dub]

the bletchley park trust sells (used to?) pamphlets in the gift shop that they call "reports" which have been written by some of the rebuild team and other associates.

[sixothree]

I think the national library (whatever it is called) has the actual operation manual available.

But this should be what you're looking for?

https://publish.fid-media.de/entities/book/f1548ef2-2420-4c9...