Thanks for the link. The Essington store would be outside the city limits of Chester, but that was probably still running up to ~1970 under the name of "Jack's Market", my uncle who married into the family. It had one of those front doors that are set at a 45 degree angle to both streets, and the main house was brick, built by students from Williamson Trade under my grandpa's watchful eye. The family collected heavy timber from the drydocks of the shipyards to build the structure.
I never saw my great-uncle Tony's store, but he died in 1974, & I doubt that it was running after that. I honestly don't know what it was called, but when I scanned the Old Chester site under "grocery", I didn't see any that caught my eye. I'm still going thru the 1940 census to find an address.