SPARKS FROM OLD PLUGS

Marvin Green writes.......

Big 4 tractor
Here is a picture of a 'Big 4' tractor that I ran out in Saskatchewan, Canada in 1913. It sure was a great rig back in those days. It had 8 ft. drivers on the rear, 4 cylinder engine and would use about 60 gal. of gas in 12 hours on breaking pra