Image Item No. Description  518-9 (Inv)  2 x 4 Plates (Architectural Hobby and Model Building Supplemental Set) 26 Parts, 1962 Catalog: Sets: Architecture  519-9 (Inv)  2 x 3 Plates (Architectural Hobby and Model Building Supplemental Set) 32 Parts, 1962 Catalog: Sets: Architecture  520-3 (Inv)  2 x 2 Plates (Architectural Hobby and Model Building Supplemental Set) 42 Parts, 1962 Catalog: Sets: Architecture  521-9 (Inv)  1 x 1 and 1 x 2 Plates (Architectural Hobby and Model Building Supplemental Set) 82 Parts, 1962 Catalog: Sets: Architecture