I have a facsimilie of a signed Loyalty Oath in my 1,022-page book.
It was signed by several people including Alfred Thompson of Collin County TX, a relative of of my great friend Mike Thompson of Ovilla TX.
I will forever be indebted to Mike for sending several interesting documents for my book, but he assured me that he had read about Oxford Lake and kept encouraging me to keep looking. (Oxford Lake was mentioned in THE BOURLAND PAPERS.) And yes, he helped me locate Oxford Lake, which was a major contribution to Texas history.