I am not sure whether to read this as “C. Wilkinson” (my initial impression) or “G. Wilkinson” but either way I haven’t been able to find anything out about the business.

This stamp is on the north side of East Kalamazoo Street between Magnolia and Hayford. Specifically, it is out in front of a community garden on the site of the former Paro Party Store (and another party store before that, and apparently a butcher’s shop when it was built in 1938), which was torn down in 2014. Despite some noise made to the contrary, everything that the Land Bank gets its hands on in this neighborhood turns into another community garden. The current occupants of this one have put up a sign dubbing it “Paro Party Garden.”

Updated 1/5/21: Based on another one I have found, I am now pretty sure it is “C. Wilkinson.”