1984 Saint Lawrence Seaway Plate Block of 4 20c Postage Stamps - MNH, OG - Sc# 2091
1956 Devil's Tower National Monument Plate Block of 4 3c Stamps - MNH, OG - Sc# 1084 - CX899
1972 National Parks Hawaii Airmail Plate Block Of 4 11c Postage Stamps - MNH, OG - Sc# C84 - CX443
1968 Hemisfair '68 - Plate Block Of 4 6c Postage Stamps - MNH, OG - Sc# 1340 - CX295
1972 National Parks Centennial Plate Block Of 4 8c Postage Stamps - MNH, OG - Sc# 1453 - CX312
