DoD released the final reports and some of the working documents of the Target Intelligence Committee about eight years ago (IIRC) which has a lot of useful information about European Axis and cobelligerent (... Finnish) signals intelligence and cryptographic practices and organization during the Second World War. I'd be interested in transcribing some of this to HTML for Hyperwar's use, or we could just link to the original resources or one of the sites that summarizes the material. TICOM Archive (TICOM Archive) has a fairly good summary, but some of their links are dead since apparently NSA.gov decided to move resources around (and possibly delete some). NARA holdings are here, also archive.org has what looks like most of the collection (probably everything that's been digitized anyway) here: TICOM Archive : Free Download, Borrow, and Streaming : Internet Archive. Not sure how Hyperwar would want to handle this but I'd be happy to work on taking it in whichever direction Otto would like. TICOM Archive is a nice site, but is very much a summary and doesn't really integrate the information available with other sources. On the German side, in particular, this fills out some interesting additional information about the structure of OKW and OKH. Edit: Ugh, sorry, you guys will learn fairly quickly that I have a bad tendency to hit post just before I've actually found all the resources I actually mean to use. Added the NARA link for the documents and modified that sentence to make sense. That said, their search function is still useless, I found the collection in a link from an NSA press release.