This photo is described by the Virtual Mitchell site as "Back of tenement off Dobbie's Loan with woman posed leaning against a wall". The windows you can just see behind the woman, (women, actually, she has a ghostly visitor who didn't want to wait out the exposure time, which might have irked the photographer in 1919 but gives it a story, now) look as if they could have belonged to a tenement. But the building behind them looks commercial. Which is an interesting idea, habitations and small factories cheek-by-jowl.
So, it looks like I'm going to be spending less time at the University and more at the Mitchell. I need maps and plans and photos and gazetteers. That's my mission for next week: find a nook to work in, and friendly staff to help me find things.