I think I found it, 1959-1961 International Harvester BC-series. Elmer ID'd a bunch of them. BC was the 2-axle, BCF the 3-axle and BC-D for the diesel version which has a different grille.

I actually googled "12 Faces of International Trucks" and came up with ads,, posters and even a clock featuring these trucks. But none mentioned the year.