It's hard to imagine the whole sink put back together from these pieces. Looks like some are missing. Quite a difficult puzzle. If one is really into difficult puzzles.
Not only did they board up every window and door, but went through the trouble to paint the boards to match the bricks. Makes for a tidy appearance that one does not see often for an abandoned building.
So there is glass in the holes. In the first shot of the door like this it appeared that there was none. I thought that putting one's eye up to a hole with a violent patient inside would be a bad idea. That patient could be waiting for such a moment with a serious finger jab.
These appear to be used. As noted the hose on the right front engine is obviously severed. Probably removed from something. If they are useless they can still be scrapped.
Looks like all, or almost all of the light bulbs are broken. Those signs used a whole bunch of low-wattage bulbs, about 7-10 watts per bulb, but when there are that many of them together you get a nice bright effect. The "movement" system was based on relay mechanisms inside the metal shell. When this type of sign is on you can actually hear the relays clicking inside to make the lights appear to move in the direction of the arrow. This sign appears to be from the late 30s-early 50s. It also appears to be restorable. The electronics would all have to be replaced with UL standards of today.
I'm going to say '80s on this one. Yes there are '70s elements such as the fake 'fro on the blond fellow and the turtle-neck on the woman on the right. The reason I'm calling '80s on this is because of the lapels on the shirts that have them and the width of the tie. The lapels are smaller and the tie is narrower -- as they were in the '80s rather than the wide style of the '70s. Also all the pants are solid-color, no plads or stripes as would have been seen on at least one member in the '70s.
Looks like the fastening ropes have naturally broken from dry-rot, but the canvass is still intact. I thought that the ropes were not intentionally broken because the canvass is in the place it would be if it just fell from the frame.