I noticed your thread and thought I'd check around. I've been by their "office" many times, but never had any idea what they actually did. There is the Anderson County Sale Barn at 59 hwy and Park St. (Hwy 31), just a short distance from their location. I use that sale barn, sometimes.
I was in Garnett Monday to get dog my her rabies shot and heart worm test.
No one in that town ever mentions, discusses or ask about the Graham School, that I've heard of.
I called a friend who graduated HS in Garnett. He currently lives 20 miles from there and usually has about 80 head of cattle. He said he didn't know what they do. He said Frank was about 3 years ahead of him in school. He said he remembered the sign in the '60's.
How did you discover them?