Baber also cared about social issues. She was called a feminist, anti-racist and anti-imperialist. In 1926 she represented the women of Puerto Rico to help women get the right to vote. She worked as chairman of the Pan-American Committee of the International League for Peace and Freedom.
- Bailey, Martha J. (1994). American Women in Science:A Biographical Dictionary. ABC-CLIO, Inc. ISBN 0-87436-740-9.
- Marilyn Ogilvie and Joy Harvey, eds. (2000). The Biographical Dictionary of Women in Science. Great Britain: Routledge. pp. 65–66. ISBN 0-415-92038-8.
|url=(help)CS1 maint: uses editors parameter (link)
- Geographic Society of Chicago. "Our History". Retrieved 4 June 2011.
- Monk, Janice (25 May 2008). "Practically all the geographers were women". Presentation at Society of Woman Geographers Triennial. Retrieved 4 June 2011.
- Photographs from the Records of the National Woman's Party. "Baber, Zonia". The Library of Congress, American Memory. Retrieved 4 June 2011.