I recently saw an item for sale on eBay - a program for the grand opening of their airport in San Angelo, Mathis Field. I got the old 1927 yearbook on eBay (the one with the pictures on my website about old San Angelo).
Another resource might be the San Angelo Standard Times. I have some old newspaper clippings from WWII about my father, who was a P-51 pilot. They probably ran other news "from the front," too. When I was a kid, they kept what was called "the morgue" - a huge set of files of clippings about folks who'd appeared on the newspaper's pages over the years. That's probably been updated by now - on microfilm or something - but they may still have some sort of index to the names on the microfilmed pages. That's JUST a guess!
Let me know what sort of luck you have with these options.If nothing pans out, I'll check around some more.