He was able to buy a 1946 A brand new when he left the Army from WW II. He also had a 1935 B that had a loader on it which was also used to mow hay with a JD no. 5 mower. As my older brother and I got older we would both be in the field with the G and the A that had a power block added to it. That is where I first experienced "destructive" and "constructive" sound waves. When we drove past each other sometimes it would get totally quiet for a brief time and then double loud for a brief time. I later learned in the mid 1980's in physics class at the local junior college about this phenomena. "Destructive" waves cancelled each other out and "constructive" waves amplified each other.
My Dad died September 10,1970. We kept the farm going and I officially started farming in January 1973 of my Senior year of high school, I bought all of the cattle and machinery including the A, B, D, and G and used them the next few years along with a 4010d. I still have them all except for the G, but I bought a 1953 G a few years ago so I would have the original "herd" of tractors again. So many good memories along with a few with my newer 4020, 4320, and 4440. I have driven many ages, breeds, and modals of tractors over the years with good memories as well.