1978 PAP Test Early Cancer Detection Plate Block Of 4 13c Stamps - MNH, OG - Sc# 1754 - CX334
1978 PAP Test Early Cancer Detection Single 13c Postage Stamp - Sc# 1754 - MNH,OG
1978 Photography Block Of 4 15c Postage Stamps - Sc# 1758 - MNH, OG - CT79a
1978 Photography Plate Block Of 12 15c Postage Stamps - Sc# 1758 - MNH, OG - CT79b
1978 Photography Single 15c Postage Stamp - Sc# 1758 - MNH, OG - CT79a
1979 - Albert Einstein Plate Block Of 4 15c Postage Stamps - Sc# -1774 - MNH, OG - CX666
1979 - Albert Einstein Single 15c Postage Stamp - Sc# -1774 - MNH, OG - CX666a
1979 Architecture Plate Block of 4 15c Postage Stamps - MNH, OG - Sc# 1779-1782
1980 Architecture Block Of 4 15c Postage Stamps - Sc# 1838-1841 - MNH, OG - CW22b
1980 Architecture Plate Block Of 4 15c Postage Stamps - Sc# 1838-1841 - MNH, OG - CW22a
1981 Architecture Block Of 4 18c Postage Stamps - Sc# 1928-1931 - MNH, OG - CW12
1981 Architecture Plate Block Of 4 18c Postage Stamps - Sc# 1928-1931 - MNH, OG - CW12a
1981 Wharton Professional Management Single 18c Postage Stamp - Sc# 1920 - MNH - CW483b
1982 Architecture Block Of 4 20c Postage Stamps - Sc 2019-2022 - MNH - CW482a
1982 Architecture Plate Block Of 4 20c Postage Stamps - Sc 2019-2022 - MNH - CW482b
1982 Architecture Single 20c Postage Stamp (Dulles) - Sc# 2022 - MNH - CW482c
1982 Knoxville World's Fair Block Of 4 - MNH, OG - Scott# 2006-2009 - DS179
1982 Knoxville World's Fair Plate Block Of 4 - MNH, OG - Scott# 2006-2009 - DS179a
1982 Robert Millikan, Nobel Physicist Block of 4 37c Postage Stamps - MNH, OG - Sc# 1866
1983 Science & Industry Plate Block of 4 20c Postage Stamps - MNH, OG - Sc# 2031
1983 Science And Industry Single 20c Postage Stamp - Sc# 2031 - MNH,OG
1984 Health Research Block Of 4 20c Postage Stamps - Sc# 2087 - MNH, OG -CW33b
1984 Health Research Plate Block Of 4 20c Postage Stamps - Sc# 2087 - MNH, OG -CW33a
1984 Lillian Gilbreth Psychology Pioneer Block of 4 40c Postage Stamps - MNH, OG - Sc# 1868
