This stamp – alas, largely illegible – is on the west side of South Magnolia Avenue between Michigan and Prospect.

The name appears to be [something] Cox, but I don’t have any leads on that contractor. The date looks like 1950, but looks a bit like 1980 too.

Looking south on South Magnolia Avenue. The stamp is on the nearest block, below the Cantu & Sons mark. It’s hard to point a camera at a sidewalk without getting a Cantu & Sons stamp.