Etching, its principles and practice : a book for students and amateurs (1889)
Shrubsole, W. G., d. 1889 · London : G. Rowney · leaf 86
SOLID SKETCH BLOCKS WITH AND WITHOUT CASES- … The Blocks consist of a number of sheets of paper, compressed so as to form a soUd mass, each sheet of which is to be separated by inserting a knife underneath the uppermost one, and passing it round the edge. The cases contain a pocket for carrying the sketches and place for pencil. Whatman…
Etching
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
