Gulf 1937 (Black and white)

Thanks to Larry Nordell for this. I don't know anything about the photograph. Winter 1937 and somewhere down South. Georgia? Birmingham, Ala.? If you can read more clues, let us know. The careful probably instinctive way the men are posing for the camera... I'd say the black guy is precisely twice as far from the white guy as the two whites are from each other. He's standing at attention, the other two 'at ease'.