I've read that the Hermann Park train used to be at Playland Park (9200 South Main); but I'd have no idea what is was called back then. Another tidbit is that Playland Park shows to have opened in 1940
Morris and Fourmys Houston City Directory, 1931: W. Cone, student at that address
Amateur Radio Stations of the United States, 1924: James R. Wright at that address
I couldn't really find anything either of than a reference for a student with an amateur radio license living at the address. The 1907 Sanborn Fire maps show a large house at the address. Note the front looks like an addition to convert it to apartments or some type of multi-person residence. I think OWL is the photographer. Other records show an OWL Foto Studio in business around that time.