Image Item No. Description  501-3 (Inv)  JUMBO Pull Toy 9 Parts, 1966 Catalog: Sets: Classic: Jumbo Bricks  502-2 (Inv)  Pre-School Medium Set 8 Parts, 1968 Catalog: Sets: Classic: Jumbo Bricks  503-2 (Inv)  Pre-School Large Set 16 Parts, 1968 Catalog: Sets: Classic: Jumbo Bricks