Grand Trunk Western 2 Bay Covered Hopper Car Stenciling Before The Large GTW 1960's Stenciling

I have two Weaver PS2 GTW covered hopper cars, one blue one brown, with the late 1960's stenciling.  I was considering doing two GTW 2 bay covered hopper cars era 1950's and cannot find any vintage pictures of the 1950's period stenciling. They may have been stenciled as the open top coal car with GTW or Grand Truck Western and dimensional data, white lettering on black carbody or black lettering on gray carbody..