1970 Wildlife Conservation Buffalo Bison Plate Block Of 4 6c Postage Stamps - MNH, OG - Sc# 1392 - CX302
1970 Natural History Plate Block Of 4 6c Postage Stamps - MNH, OG - Sc# 1387-1390 - CX311
1968 Wood Ducks In Flight Plate Block Of 4 6c Postage Stamps - MNH, OG - Sc# 1362 - CX351
1969 Beautification Of America Plate Block Of 4 6c Postage Stamps - MNH, OG - Sc# 1365-1368 - CX353
1969 Botanical Congress Plate Block Of 4 6c Postage Stamps - MNH, OG - Sc# 1376-1379 - CX361
1980 Coral Reefs Block Of 4 15c Postage Stamps Sc# 1827-1830 - CW205
1972 National Parks Centennial Plate Block Of 4 8c Postage Stamps - MNH, OG - Sc# 1453 - CX312
1972 Wildlife Conservation Plate Block Of 4 8c Postage Stamps - MNH, OG - Sc# 1464-1467 - CX314
1989 Dinosaurs Prehistoric Animals Block Of 4 25c Postage Stamps - Sc 2422-2425 - CW223
