"This site offers two approaches for the study of specific time periods in American women's history. Each section includes a timeline that links specific events with highly relevant online sources, followed by a guide to research sources (e.g., census, newspapers, secondary sources) that are appropriate for the specified time period."
Pfaelzer, J. (1999). Salt of the Earth: Women, Class, and the Utopian Imagination. Legacy: A Journal of American Women Writers, 16 (1): 120-31.
This is an article that deals with representations of working women and class in the film.