One historical photo to go

Before there were the Dallas Cowboys, there were Dallas cowboys.

Why it matters: The above photo is what the city looked like in 1945 — before all the Californians moved in.

Flashback: Just 294,734 people lived in Dallas in 1940. The population grew to 434,462 by 1950.

• The region was home to the North American Aviation plant, which was one of the most prolific airplane manufacturers during World War II.