Image Item No. Description  836-1 (Inv)  Doors and Windows Parts Pack 37 Parts, 1980 Catalog: Sets: Universal Building Set: Supplemental  837-1 (Inv)  Wheels and Tires Parts Pack 16 Parts, 1980 Catalog: Sets: Universal Building Set: Supplemental  840-1 (Inv)  Baseplate, Green 1 Part, 1980 Catalog: Sets: Universal Building Set: Supplemental  843-1 (Inv)  Baseplate, Gray 1 Part, 1980 Catalog: Sets: Universal Building Set: Supplemental