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Photographic negative. Per image envelope: 1960s Maple Syrup. Image shows a man at a counter with sinks/vats in them. In the containers looks like maple syrup. In front of the counter are large tanks with pipes with valves coming out of them going toward the ceiling. A pipe comes out of the bottom of the first tank and a liquid is coming out and into one of the vats.
film size 35 mm