This image is better composed to highlight the illusion of differing angles of repose for both the standing and hanging subjects. The camera is held so that the image created makes the floor and door look level with the ground, but both the subjects indicate this is not accurate.
There is no description on the back of this card.
An examination of photos on the Mystery Spot website shows photos that are nearly identical to the ones shown here, confirming that the organization changed names but not locations over time.
This image likely dates from the 1940s.