Googled: Women in police service 1930s, Women as private investigators 1930s
I'm looking for any information about women as detectives in police service or working as private investigators in late 1920s - early 1930s.
I've read about the first women in the police service and the International Association of Police Woman, and what I've read gave me the impression that there were any female detectives or PIs.
On the other hand, there were several books published in the 30s about women as PIs (by Gardner and Stout, for instance), so the idea might not be as preposterous?
I'll be extremely glad for any pointers!