Marshall Ford is where the Mansfield Dam is built on the Colorado River of Texas.

Below are a couple of submissions I made a while back to Texas Bridges & Crossings – History

https://tshaonline.org/handbook/online/articles/hrm16

More about Mansfield Dam

https://en.m.wikipedia.org/wiki/Mansfield_Dam

My dad was one of the workers on the Mansfield Dam Project.