Postcards of female and male impersonators from the early 20th century
Oh wow, we just discovered this image collection on JSTOR: Cornell University's Postcards of female and male impersonators and cross-dressing in Europe and the United States, 1900-1930, 1955. Open and free to everyone!
Pictured here is the awesome Betti Kuhn, described in this 1910 photo as an "award-winning female singing comedian." Looking damn cool with that monocle, we might add.