According to the BBC, GCHQ in the UK has just released a previously unseen photos of Colossus, the (WWII codebreaking machine), and apparently some Blueprints too....
https://www.bbc.co.uk/news/technology-67997406From the photos in the article, it looks (although there were 10) rather more modern than previous photos I've seen. Cabinetry rather than bare skeletal frames, even if some of them do have a 'kitchen cabinet' of the era look.