The town of of Glenrock
Sometime between the early 1900s and the 1960s, Glenrock went from being Glen Rock (two words) to Glenrock (one word).
Here's a picture of Glenrock in about 1909. We're looking into town from the southwest corner.
This is the bustling metropolis of Glenrock about 1930. We're looking directly downtown, from a hill at the south edge of town. On the left side of the picture in the distance is the Chicago & North Western Station.
Glenrock's Mutual Oil Company in the 1920s. Can you spot it in the photo above? If you do, can you tell me where it is, please?