Elevator Doors

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Each floor has a freight elevator, and the doors of the first four are decorated. There was, possibly, a fifth floor in the building, but it wasn't accessible. Or that stairway may just have gone to the roof. In all the excitement, I can't remember if there were four floors or five. But, being as how this is the most powerful art in NYC, it could blow your head clean off... (The fifth stairway went to the roof, but was off-limits except to the artists who painted it. But knowing the floor count is no reason to ruin a perfectly good Dirty Harry riff...)
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