I've seen them in the old Apex building in Pawtucket here. They're either Mv or MH and are on very old 50s style white painted steel poles. There are also MV or MH post tops with white round globes on them. The building has been closed for quite some time so i think the indoor lights might be T12... The inside has troffers and a 2X4 grid ceiling if i remember correctly so no preheat unless there are a few fixtures in the break room or something.
Yeah I doubt they'll be stickign around though if the place finally gets some occupants. I think they want to do some rennovations. I can see it now: LED shoebox lights.
Here's a pic: