Hey, there!

[patrolpilot]

I had started to reply that it was the NGP, Texas to Chicago, but the insurance agent for my airplane called. The NGP airplanes were solid white with blue numbers. 75N is a good memory as I often saw that airplane refueling at Refugio, TX (RFG) and would visit with the pilot. He had to be close to sixty, I was in my early twenties.

TGP numbers ended with "L". Our pipeline was a TX to NYC line. There were five or six Texas based companies doing the same to other corners of the country. They were also being used on the Alaska pipeline.