Over 10 years ago I inquired thru this group trying to verify that the "tractors" that Oklahoma registered from 1915 to 1941 were in fact farm tractors. (License plates were issued from 1915 to 1937 but registration continued thru 1941. Industrial Tractors however were issued tags from 1937 to 1941. I still do not have a photo of a farm tractor with an Oklahoma license plate on it but I did find some 1926 applications for registration with the 1925 tag numbers listed. Among the Tractor registrations were some for 1919, 1920 and a few other years of Fordson tractors. The few plate collectors that did not believe the state issued tags for farm tractors had to admit that a Fordson tractor was in deed a farm tractor so I was right. However, I am still looking for anybody that has information specifically about OKLAHOMA license plates on tractors that they purchased, or old photos of a tractor with an Oklahoma plate on it. I am also interested photos of any Oklahoma license plates you have regardless of what type vehicle they were for.