1888 Jacobi’s Printers' Vocabulary / P / Proofs in Sheets. [p. 105]
Proofs of matter made up into pages imposed and pulled in sheet form, as distinct from slip proofs.
· ·
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Entry taken from Printers' Vocabulary, by Charles Thomas Jacobi, 1888.
· 
· 