1952 Grand Coulee Dam Reclamation Plate Block of 4 3c Postage Stamps - MNH, OG - Sc# 1009
1952 Centennial Of Engineering Plate Block of 4 3c Postage Stamps - MNH, OG - Sc# 1012
1952 Gutenberg Bible Plate Block of 4 3c Postage Stamps - MNH, OG - Sc# 1014
1977 Talking Pictures Anniversary Plate Block Of 4 13c Postage Stamps - MNH, OG - Sc# 1727 - CX328
1965-78 - Albert Einstein Plate Block Of 4 8c Postage Stamps - Sc# 1285 - MNH, OG - CX488
1960 - First USA Automated Post Office Plate Block of 4 4c Stamps - Sc# - 1164 - MNH, OG - CX674
1957 Steel Centennial Plate Block of 4 3c Stamps - MNH, OG - Scott# 1090 - CX901
1957 Shipbuilding Since 1607 Plate Block of 4 3c Postage Stamps - MNH, OG - Sc# 1095
1969 John Wesley Powell Plate Block Of 4 6c Postage Stamps - MNH, OG -Sc# 1374 - CX359
1978 PAP Test Early Cancer Detection Plate Block Of 4 13c Stamps - MNH, OG - Sc# 1754 - CX334
1982 Knoxville World's Fair Block Of 4 - MNH, OG - Scott# 2006-2009 - DS179
1976 Alexander Graham Bell Plate Block of 4 13c Postage Stamps - MNH, OG - Sc# 1683
1979 Architecture Plate Block of 4 15c Postage Stamps - MNH, OG - Sc# 1779-1782
1996 Ernest E. Just Plate Block Of 4 32c Postage Stamps - MNH - Sc# 3058 - CW361
