After accumulating technical information for 40 years, it is time to part with a good part of my technical manual collection. The listed items are all original manufacturers literature, and appears to be complete and in reasonable condition. None of these manuals are falling apart; they should all be useful if you own the appropriate gear. This is for an original Studer J37 tape recorder manual, as pictured. Obviously the binder itself is not original. You may know that the C37 was the tape deck of choice in the 60's european studios.