The three types of “proofs” that are present in our collection are Galley Proofs, Master Proofs and Page Proofs.
A proof taken from the 'galley '(the long shallow metal tray used by compositors to hold type after it has been set) before the copy has divided into pages; in modern terms, a proof taken before taken before the division of the copy into pages.
A typesetter's proof, read and marked with corrections and queries; a marked proof.
The proofing stage galley proofs, but before machine proofs, in which the matter has been segregated into pages (with or without illustrations).
The University of Texas at El Paso has a much larger collection of S.L.A. Marshall's papers in their Special Collections.
Libertary is a website that provides entire books to read
online for free. They include John Marshall's book
Reconciliation Road: A
Family Odyssey, a memoir of his grandfather, S.L.A. Marshall, and the
family breach caused when the younger Marshall sought conscientious objector
status during the Vietnam War.