Grandpa Hill had a Farmall tractor. I think he had the H model, then upgraded to another letter. Something like that.
Mehmke looks like a German name. Mom’s family name is Fromke. That -ke ending is peculiar. I remember doing some research on it, having to do with location based on the Elbe.
The Mehmkes operate a tractor museum in Montana. Maybe I will visit one of these days.