The practical printer : a complete manual of photographic printing
A technical manual from 1874 by Charles W. Hearn, published in Philadelphia by Benerman & Wilson, covering photographic printing processes for practising photographers. The four line engravings show apparatus: a hinged frame or printing box with a central cut-out, a shallow tray with ribbed base, a folded cloth or sheet form, and a broken, cracked plate in a slanted frame, illustrating printing equipment and fault diagnosis for a designer studying Victorian technical diagrams.
