Some good detail info can be found in this series of books:

http://www.spaceinminiature.com/books/about.html

While primarily intended for plastic modelers, there's a lot of stuff in these books that's useful for detailing flying Scale model rockets as well.

And while the request was for books, if we can allow for a few rolled drawings to be stacked in one of the library's corners, then it's hard to beat these for the key US Space Race subjects:

http://www.realspacemodels.com/drawing-sets

__________________
John
YORF #003
SAM #004