Man doing a handstand on railroad tracks. Pori, Finland. 1910–1939.
Photographed by Emil Kustaa Klint.
Source: https://finna.fi/Record/satakunnanmuseo.104E4850-FE38-457A-A594-20D9F488AFA1
Liddy Bacroff (19 August 1908, Ludwigshafen - 6 January 1943, Mauthausen concentration camp) was a trans woman and sex worker of the Weimar Republic era, persecuted and killed by the Nazi regime during WW2.
I highly recommend Dr. Bodie Ashton's lecture in the video above for information on her life in an English language source.