You nailed it John! I blurred the street sign so it would be less obvious. The picture is from 1985.
That is the location and this photo looks north at the Marcy Street Lead as it was known. It curved over from the C&E Line on Kingsbury by squeezing between buildings.
In the 1950s customer served by the Marcy Street Lead on the north end (it ended at Cortland to the north) were JB Day, Chicago Pottery, and Republic Plumbing at 1958-68 Clybourn. On the southern end it served Deppe Bakery, Budlong Pickles at 1840 N. Marcy, and a Turtle Wax plant at 1800 N. Clybourn. In the middle were American Can and Metalcraft.
By 1982 it had been identified as a candidate for abandonment by the Milwaukee Road.
The Goose Island brewery is in the former Turtle Wax factory.