One helpful tool to start when researching charities is The Nonprofit Sector in the United States: A Resource Guide, one of the many library guides that we offer in the Business Section.
Produced from 1919 into the 1990s, the Women's Bureau publication "Bulletin" is filled with articles about women working in various industries. Of particular note, a series of issues from the 1940s illustrate women's many contributions to defense industries and the war effort in the Second World War.