1952 Gutenberg Bible Single 3c Postage Stamp - MNH, OG - Sc# 1014
1964 Doctors Mayo Clinic Single 5c Postage Stamp - MNH, OG - Sc# 1251`- CX253
2006 Dr Jonas Salk Polio Vaccine Plate Block of 4 63c Postage Stamps - MNH, OG - Sc# 3428
1992 Theodore Von Karman Single 29c Postage Stamp - MNH, OG - Sc# 2699
1973 Progress In Electronics Single 8c Postage Stamp - Sc# 1501 - MNH, OG - CX561
1968 Hemisfair '68 - Single 6c Postage Stamp - MNH, OG - Sc# 1340 - CX295
1964 Verrazano-Narrows Bridge, New York Single 5c Postage Stamp - MNH, OG - Sc# 1258 - CT90c
1962 United Against Malaria Single 4c Postage Stamp - Sc# 1194 - MNH, OG - CX594
1978 Photography Single 15c Postage Stamp - Sc# 1758 - MNH, OG - CT79a
1976 Chemistry Single 13c Postage Stamp - MNH, OG - Sc# 1685
1940 Dr. Walter Reed Block of 4x 5c Postage Stamps -SC3877 - MNH,OG
1955 Atoms for Peace Single 3c Postage Stamp - Sc# 1070 - MNH,OG
1973 Marconi Coil Progress in Electronics Single 6c Postage Stamp - Sc# 1500 - MNH,OG
1965 US Crusade Against Cancer Single 5c Postage Stamp - Sc# 1263 - MNH,OG
1944 Motion Picture Anniv. Single 3c Postage Stamp -Sc#926 - MNH,OG
1940 Luther Burbank - Scientists - Single 3c Postage Stamps - SC# 876 - MNH,OG
1940 Dr. Crawford W. Long - Scientists - Single 2c Postage Stamp - Sc# 875 - MNH,OG
1940 Dr. Crawford W. Long - Scientists - Plate Block of 4 2c Postage Stamps - Sc# 875 - MNH,OG
1958 Atlantic Cable Centenary Single 4c Postage Stamp - Sc#1112 - MNH,OG
1996 Computer Technology Single 32c Postage Stamp - Sc# 3106 - MNH,OG
1962 Seattles World Fair Single 4c Postage Stamp - Sc# 1196 - MNH,OG
1952 Grand Coulee Dam Reclamation Single 3c Postage Stamp - Sc# 1009 - MNH,OG
1996 Breast Cancer Awareness Single 32c Postage Stamp - Sc# 3081 - MNH,OG
1952 Engineering Centennial Single 3c Postage Stamp - Sc# 1012 - MNH,OG
