I’m surprised I hadn’t noticed this one before. It’s the only J. Carter stamp I have found besides the cluster of them on Michigan Avenue near Sparrow. It’s on the east side of Allen Street between Kalamazoo and Marcus, on the west side of the Neogen building (the former Allen Street School).

There’s a bonus McNeilly stamp in there for you too.
Looking toward Kalamazoo Street. I pass a lot of dog walkers around the neighborhood on my evening walks.