1940 Jane Addams Single 10c Postage Stamp - Sc# 878 - MNH,OG
2001 Enrico Fermi - Physicist Plate Block of 4 34c Postage Stamps - MNH, OG - Sc# 3533
1997 First Supersonic Jet 1947 Single 32c Postage Stamp - MNH, OG - Sc# 3173 - DA107
1995 Alice Hamilton Block of 4 55c Postage Stamps - MNH, OG - Sc# 2940
1984 Lillian Gilbreth Psychology Pioneer Single 40c Postage Stamp - MNH, OG - Sc# 1868
1979 - Albert Einstein Single 15c Postage Stamp - Sc# -1774 - MNH, OG - CX666a
1965 New York Worlds Fair Single 5c Postage Stamp - MNH, OG - Sc# 1244`- CX243
1944 Telegraph Centenary Single 3c Postage Stamp - MNH, OG - Sc# 924
1940 Pan-American Union Single 3c Postage Stamp - MNH, OG - Sc# 895
1967 Plan For Better Cities Plate Block of 4 5c Postage Stamps - MNH, OG - Sc# 1333
1999 John and William Bartram, Botanists Plate Block Of 4 33c Postage Stamps - Sc 3314 - MNH - DM135
1998 Breast Cancer Single 32c Postage Stamp - Sc# B1 - MNH, OG - CX6a
1996 Computer Technology Plate Block of 4 32c Postage Stamps - Sc# 3106 - MNH, OG - CX539
1984 Health Research Block Of 4 20c Postage Stamps - Sc# 2087 - MNH, OG -CW33b
1982 Architecture Single 20c Postage Stamp (Dulles) - Sc# 2022 - MNH - CW482c
1981 Wharton Professional Management Single 18c Postage Stamp - Sc# 1920 - MNH - CW483b
1963 Alliance For Progress Single 5c Postage Stamp - Sc#1234 - MNH - CW470a
1935 California Pacific International Expo Plate Block of 4 3c Postage Stamps - MNH, OG - Sc# 773
1996 Pioneers of Communication Plate Block of 4 32c Postage Stamps - MNH, OG - Sc# 3061 3064
1992 Theodore Von Karman Plate Block of 4 29c Postage Stamps - MNH, OG - Sc# 2699
1949 Wright Bros Airmail Block Of 4 6c Postage Stamps - Sc# C45 - MNH - CW400c
1996 Smithsonian Institution Plate Block of 4 32c Postage Stamps - MNH, OG - Sc# 3059
1995 Antique Automobiles Cars Strip Of 5 32c Postage Stamps - Sc# 3019-3023, MNH, OG - CW354
1978 Photography Block Of 4 15c Postage Stamps - Sc# 1758 - MNH, OG - CT79a
