Papec was made in Shortsville in the Finger Lakes region (Ontario County) so it probably was more about supporting an area product. As far as who the dealers were I really do not know as Papec went out of business in the late 1970's.
The White dealer was on Route 21 and I think they had a hardware business, too. I don't remember the exact address I would have to drive to it to point it out.
Most of the dealers down there I learned by driving by to or from home. The rest was just talking to the ag guys about where they are from and so forth.
I think the golden age of the school farm was about the time I was there in terms of money spent but it sounds like they have done some stuff recently. It's been a few years since I have been by there.