I don't think anyone's library could be big enough so they are not missing something. Anyone have a spare copy of
Geschichte der Mauser Werke My next book is also by Whelen,
Amateur Gunsmithng By Townsend Whelen, 1924, NRA
This is one of the first good gunsmithing books that deal with early bolt action custom guns.
Along the same lines but way more complete is the two volume set
The Modern Gunsmith by James V. Howe 1934, Funk and Wagnalls
This is a must have for anyone working on older sporting rifles.