From formerdays.com:
A few of the fantastic woman flyers of the early 20th century. (For some of those I’ve missed, the Smithsonian Air and Space Museum has a great online exhibit).
From various institutions, but especially the San Diego Air and Space Museum.
Matilde E. Moisant, the second American woman to get a pilot’s license, 1912. Source
Ruth Elder, c.1920s. Source
Lores Bonney, c. 1933. Source
Adele Mullin and a fellow pilot, c. 1939. Source
Harriet Quimby, first American woman to earn a pilot’s license, c.1912. Source
Jean Batten (and her kitten!) being interviewed after flying from Britain to Australia, 1934. Source