Taylor,
I have pictures (slides) of the dump gons taken in 1980 in poor shape taken in Skagway I also have pictures of both the container flats as well as the flats used to hall the large ore bins. I remember that the ore flat that held a single ore bin were painted black with just the WP&Y plus the car number in white. I rode the WhitePass in 80 and 81
Skonk