I did notice a few books - but not many books. One was the USN diving manual, others did not contain a dust jacket
It has been my observation over the years that a collector may have all the items but if they do not have the Manuals, Catalogs and Brochures that describes the units they really have a collection of junk.
I had a collection of post World War 11, (1940-1945) French Books and Manuals which were printed on very cheap,delicate almost newsprint quality paper, therefore I would suspect most European items printed to the mid 1960s would be in low supply and high demand.
All my French items were stolen by an Expat Frenchman and his wife who scooted off to Mexico and probably by now all the items have been tossed. Gone forever!
sdm