1964, William Wasserstrom, Civil Liberties and the Arts: Selections from Twice a Year, 1938-48 (page 230)Servile smudgers of history, prattling about an Emil Ludwig and a Thomas Mann season — meaning the Weimar period — as if it had produced me and as if I had used the Republic for a background!
2002, David Bergsland, Introduction to Digital Publishing (page 147)The tools can get rather exotic - spinners, rubber stamps, airbrush, smudgers, and so on.