Can someone tell me where i can find a G scale farm tractor, fifties vintage?
"Farm and Fleet" type stores sell LOTS of different sized farm toys. "Theisens", "Blains"... I am sure in your area the will be a farm store of some sort.
The toys range in scale from HO to the many "G" scales. I have seen 1:32, 1:24, 1:20, and others that would fit in "G". Given that there are very few "EXACT SCALE" models in "G", you will find something in this range that will fit closely with your layout.
Remember, "G-Scale" does not stand for "Garden Scale" it means "GOOFY SCALE", all the manufacturers use a rubber ruler to scale things to fit their idea of what scale is right for "G-TRACK" (45-mm gauge).
Semper Vaporo
Pkgs.