* Margaret Sanger (1911), "What Every Mother Should Know", Based on a series of articles Sanger published in 1911 in the New York Call, which were, in turn, based on a set of lectures Sanger gave to groups of Socialist party women in 1910–11. Multiple editions published through the 1920s, by Max N. Maisel and Sincere Publishing, with the title "What Every Mother Should Know, or how six little children were taught the truth." 1921 edition, Michigan State University