Four cool vintage workplace photos

I have no idea when or where these black-and-white photographs are from. The only thing on the back of them is "FOLDER NO. 1092."

They're really cool, though, especially when you magnify them to check out all of the details in the nooks and crannies of these workplace settings. (Click on them to magnify.)

The large sheet of paper in the center of the above photograph states:

"SHARE
COMMUNITY
WELFARE CAMPAIGN
NOV. 1-21"

Here's one of the cool details from that last photo...