I only have one harvesting movie, and it is from The Farming Press Company in the UK. It's called The Two Thousand Mile Harvest and it follows the Payne family from Texas to Alberta. Hope this helps.
One of the better movies based on custom harvesters is called "Race against the Harvest" with Wayne Rogers and Earl Holliman. The copy I have I found and purchased on Amazon.com .
We had one in England released a few years ago called 2000 Mile Harvest. It follows a team of Deere drivers from Munday in Texas to Canada. It was released by Farming Press in England. In North America it says distributed by Diamond Farm Enterprises, New York. There are one or two Axial Flows on it in transport.
There's a BBC documentary called Golden Trail From Texas. It follows Dale Starks' crew for a season. The only other suggestion is Wild Harvest. Don't know who was in it or where to get it, but it's a '50's take on custom harvesting. Both star MF combines, by the way. Cheers!
Golden Trail used to be a part of the MF combine service video set. Try asking at an established (oldIJ) Massey dealership. Best guess on Wild Harvest is a quick Google search or the UClA film library. I've seen it a couple of times on the late late late Movie, but not recently.
Anyone remember a movie that had 760 (or 750) in it if I remember right there was some bad guys that were running away chased by police or something, and they in some part of the film used that MF as a getaway... 70s or 80s movie I believe.