The theory of colouring: being an analysis of the principles of contrast and harmony in the arrangement of colours, with their application to the study of nature, and hints on the composition of pictures, etc (1872)
Bacon, J · London, G. Rowney · leaf 96
SOLID SKETCH BLOCKS & TABLETS. … The Blocks consist of a number of sheets of paper, compressed so as to form a solid mass, each sheet of which is to be separated by inserting a knife underneath the''uppermosC one, and passing it round the edge. The Tablet is ^ block fixed in a case, with a pocket for carrying the sketches and…
Color
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
