was Hoyt-Clagwell a real company?

If you can believe the credits of one of the episodes, then yes... :lol:

http://4.bp.blogspot.com/-XljI_ZWwe98/VVAYaF0Sl2I/AAAAAAAABI8/ggV7HuY9zgU/s1600/6a00e54ed05fc28833015436485f50970c-800wi.jpg

Actually, according to this website (http://comforttv.blogspot.com/2015/05/the-museum-of-comfort-tv-salutes-hoyt.html), the tractor was a Fordson Model F.