I recently purchased the Walther's Cornerstone Interstate Fuel & Oil for my layout. I also need to buy some tank cars to service this industry. However, I'm having difficulty finding out which tank cars would've been used to service bulk dealers such as this in the 1950's era. I'm modeling in N scale, so my selection is going to be limited. Going by what I've read, here is an image of what I was going to use: Is this the correct style to use for fuel and oil in the 1950's?