Back in the old days, Schenectady Chemicals had its own fleet of tank cars. Here, B&M 339 switches one such car outside the Schenectady Chemicals plant in Rotterdam Jct., N.Y., on the Boston & Maine's "West End." This industry is the westernmost customer on the current Guilford system. The CSX interchange (Conrail at the time of this photo) is about a mile west of this spot. Scanned from a color negative.