Ray Batchelor writes: “Taken from an article by Walter Nelson and used by him as evidence of historical same sex dancing. http://www.walternelson.com/dr/same-sex-dance No source is given by Nelson for the image so it is impossible to say which dance they are dancing. It could be tango. Andrew David Field writing
The Queer Tango Image Archive
Pre-1995 Queer Tango Imagery