CHAPTER XVI
PHOTO-LITHOGRAPHY--_continued_
The Copy--Gradations of Tone--"Scraper Boards"--Description and Effect--Shading Mediums--Crayon Drawings--Half-tone Copy 89-95
PHOTO-LITHOGRAPHY--_continued_
The Copy--Gradations of Tone--"Scraper Boards"--Description and Effect--Shading Mediums--Crayon Drawings--Half-tone Copy 89-95