Marion Post Wolcott is best known for the more than 9,000 photographs she produced for the Farm Security Administration (FSA) from 1938 to 1942.1 This work is preserved at the Library of Congress Prints and Photographs Division and also available online. Before Wolcott became a government photographer, she earned her living making photographs for magazines and newspapers. Initially she worked freelance, but, as a staff photojournalist in 1937 and 1938, Wolcott broke gender barriers in the newspaper darkroom. Then she worked for the Farm Security Administration, one of the largest news photography projects in the world.  Although she worked professionally for only a few years, her artistry and perseverance have inspired many articles, books, and exhibitions and her photographs created a lasting record of American life on the eve of World War II.
FROM http://www.loc.gov/rr/print/coll/womphotoj/wolcottessay.html

The Photography of Marion Post Wolcott~
https://americanart.si.edu/artist/marion-post-wolcott-18332
Oral history interview with Marion Post Wolcott, 1965~
http://www.aaa.si.edu/collections/interviews/oral-history-interview-marion-post-wolcott-12262
Shorpy: M.P. Wolcott~ http://www.shorpy.com/image/tid/142