Related material is in the Planned Parenthood Federation of America Records; Margaret Sanger Research Bureau Records; Dorothy Brush Papers; and Florence Rose Papers.
Additional papers of Margaret Sanger are at the Library of Congress, Washington, D.C. (also available on microfilm in the SSC).
See also Revealing Women's Life Stories: Papers from the 50th Anniversary Celebration of the Sophia Smith Collection for Ellen Chesler's article on Margaret Sanger.