The Practical photographer; an illustrated monthly of technical photography (1904)
Boston [etc., Photo era publishing company] · leaf 89
Fig. 41. … STUDY OF SKIN TEXTURE, SHADOWS, AND FRECKLES. In Fig. 42 the shadows of the ear have been softened. The freckles are removed from the nose and cheek. The more noticeable freckles have been removed from the forehead.
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.