I assume the building in photo 2 in #33 was the old employment exchange. If the wall ran from opposite that entrance to the left then it is at the back of the iron foundry in Staniforth Street but also looks as if buildings fronting Moland Street could have also had it as a back wall. I know we have other maps but I am trying to get things clear in my mind - is the attached about right? Machine tool works is roughly where the Iron Foundry was.
Janice