Earlier this year Bruce Blair kindly loaned us a copy of an important body of work in the field, C3: Nuclear Command, Control, Cooperation, by Valery E. Yarynich. We digitized it (thanks to two graduate research assistants) and have put the book in its entirety up on Scribd. It’s even OCR’ed!
The book is available here. [Updated] For a bit of background on Valery Yarynich, start with this article by David Hoffman written after Yarynich’s death in 2012.