My sister sent me a stack of old family photos a month or so ago. Buried in the stack was a single slightly blurry photo of the layout I had in high school. Dead in the center of it is the Colber oil well I bought when a toy store was going out of business. Today, that same oil well is still working on my "adult" layout.
(I think the oil tank made out of the Comet cleanser can in the right rear of the older photo is still in a box in my basement. I'll have to check. The oil tanks just behind the signal bridge in today's photo came off my childhood layout, too. They were made out of vegetable cans wrapped in 1" masking tape that were spray-painted gray.)