Jules Heller and Nancy G. Heller, editors, North American Women Artists of the Twentieth Century : A Biographical Dictionary, Routledge, , 350 p. (ISBN1-135-63889-6, lire en ligne).
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(en) « Bertha Lum », FAMSF Search the Collections, (consulté le )
(en) Paths to the Press : Printmaking and American Women Artists, 1910-1960, Manhattan, Kan., Marianna Kistler Beach museum of art, Kansas state university, , 1re éd., 261 p. (ISBN1-890751-13-8, OCLC71842315).
(en) Elizabeth Gaede Seaton, Paths to the press : printmaking and American women artists, 1910-1960, Marianna Kistler Beach Museum of Art. (1re ed.). Manhattan, Kan.: Marianna Kistler Beach Museum of Art, Kansas State University. 2006 (ISBN1890751138) (OCLC71842315).