I have a question i have been trying to answer for several years.
I collect old maps and have noticed these oval shapes appearing in various road maps and topo maps from the twenties through the fifties.
This is an area near the Ship Channel about Clinton and the East Loop.
Here is a copy from a Sanborn map from about 1926 and then an aerial from Google.
Note all the streets are not still present and some of the current names have changed.
The two pics are roughly the same scale.