Question regarding Intermodal operations in the 1970's

I was looking through the walthers catalog when i came across the 40’ hi-cube containers, they were on a cheap sale. Where these around in the 1970’s. what did they carry them in? Would this fit my era?

Thanks!

In the 1970’s, container was a very small portion of the intermodal operations. Most of the operation was TOFC and the most common loading method was circus ramps. Containers used straddle cranes a lot. Double stack was relatively rare.

Dave H.