501 Walnut Street

This one is a puzzle from the Bob Sale Collection.

https://www.louisianadigitallibrary.org/islandora/object/oplib-bsc%3A41

It was labeled, “501 Walnut Street”. This would be the parking lot for the Warehouse Restaurant. I don’t believe the street with the railroad tracks is Walnut. I notice the sign on the front points to the entrance on the other side of the building. Train tracks (or maybe trolly?) are long gone and so is the building. I wonder if the photographer is standing in front of the warehouse to take the photo? The street with the tracks would then be the dead end of Riverside Drive. What a mystery!