Seiberling was Mr. Bob's employer before, during and I believe for a bit after WW-2. The company had a large business in off road and specialty tires and a large client base in the south. No one wanted that territory, so Bob took it. The company allowed him to bring his camera and use his company car to explore railroads and shortlines on weekends as well. Bob's boss liked Bob because Bob loved to go and explore on weekends, and therefore stayed in his territory, instead of wanting to be back in Ohio every weekend.
The Beebe story is very true, as Beebe apparently promised copies of Mixed Train Daily to everyone that he came across, and no one ever got one. Bob relates the WT Carter story in at least a pair of his books or articles also.
When I saw the sign, I could not help but think of Bob. Without Seiberling, Bob would have never been allowed to become the rail historian that he was, nor would he have followed that into a rail preservation career culminating in the Colorado Railroad Museum.