1976 Alexander Graham Bell Sigle 13c Postage Stamp - Sc# 1683 - MNH,OG
2001 Enrico Fermi Single 34c Postage Stamp - Sc# 3533 - MNH,OG
1940 Walter Reed Plate Block of 4 5c Postage Stamps - Sc#877 - MNH,OG
1966 Albert Einstein Single 8c Postage Stamp - SC3 1285 - MNH,OG
1964 Amateur Radio Single 5c Postage Stamp - Sc# 1260 - MNH,OG
1959 Dr Ephraim McDowell Single 4c Postage Stamp - Sc#1138 - MNH,OG
1996 Smithsonian Single 32c Postage Stamp - Sc# 3059 - MNH,OG
1983 Science And Industry Single 20c Postage Stamp - Sc# 2031 - MNH,OG
1072 Osteopathic Medicine Single 8c Postage Stamp - Sc# 1469 - MNH,OG
1996 Computer Technology Block Of 8 32c Postage Stamps - Sc# 3106 - MNH, OG - CW328
2004 R. Buckminster Fuller Plate Block of 4 37c Postage Stamps - MNH, OG - Sc# 3870
2008 Semipostal Alzheimers Plate Block of 4 "Forever" Stamps - Sc# B6 - MNH, OG -DC141
1969 John Wesley Powell - 1869 Expedition - Single 6c Postage Stamp - Sc# 1374 - MNH,OG
2011 American Scientists Strip of 4 Forever Postage Stamps - MNH, OG - Sc# 4541-4544
1940 Luther Burbank Plate Block Of 4 3c Postage Stamps - Sc# 876 - , MNH, OG
1979 - Albert Einstein Single 15c Postage Stamp - Sc# -1774 - MNH, OG - CX666a
1958 Int Geophysical Year Single 3c Postage Stamp - MNH, OG - Sc# 1107
1984 Lillian Gilbreth Psychology Pioneer Single 40c Postage Stamp - MNH, OG - Sc# 1868
1940 Pan-American Union Single 3c Postage Stamp - MNH, OG - Sc# 895
2001 Enrico Fermi - Physicist Plate Block of 4 34c Postage Stamps - MNH, OG - Sc# 3533
1944 Telegraph Centenary Single 3c Postage Stamp - MNH, OG - Sc# 924
1962 Space Project Mercury Single 4c Postage Stamp - MNH, OG - Sc# 1193 - CX213
1965 New York Worlds Fair Single 5c Postage Stamp - MNH, OG - Sc# 1244`- CX243
1997 First Supersonic Jet 1947 Single 32c Postage Stamp - MNH, OG - Sc# 3173 - DA107
