Inside Out Library · ExploreColor problems; a practical manual for the lay student of color (1902)Vanderpoel, Emily Noyes, 1842-1939 · New York, London [etc.] Longmans, Green, and co. · leaf 163Plate II A No. 1 A No. 2 … DifiEraction Grating SOLAR SPECTRAColorInternet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.More pictures from Color problems; a practical manual for the lay student of colorMore like this
