[DrScump]

Was it the same back then? It looks like a body of water to the right, and there is no water between modern 7th & Berry and the train tracks.

[nostrademons]

Mission Bay ends at Berry Street:

https://goo.gl/maps/jkCgyCZVw4C2

It looks like this photograph was probably taken on Berry street on the other side of the Caltrain tracks, near the Embarcadero Freeway, and "7th and Berry" is only an approximate location.