1976Plane and Globes Single 25c Air Mail Postage Stamp - Scott C89- MNH,OG
1978 Wright Bros Block of 4 31c Airmail Postage Stamps - Scott C91-C92 - MNH,OH
1979 Octave Chanute Plate Block Of 4 21c Postage Stamps Scott C93 & C94 - MNH, OG - CX885
1988 Settling of New Sweden Single 44c Airmail Postage Stamp - Scott C117 - MNH,OG
1988 Igor Sikorsky Single 36c Airmail Postage Stamp - ScC119 - MNH,OG
1988 Settling Of New Sweden Airmail Block Of 4 44c Postage Stamps - MNH, OG - Scott C117 - BC49
1988 Settling Of New Sweden Airmail Plate Block Of 4 44c Postage Stamps - MNH, OG - Scott C117 - BC49a
1989 Am. Carving Single 45c Airmail Postage Stamp - Scott C121 - MNH,OG
1991 First Americans Crossed From Land Bridge Block Of 4 50c Postage Stamps - Scott C131 MNH, OG
1991 William T. Piper Single 40c Airmail Postage Stamp - Scott C129 - MNH,OG
1999 Niagara Falls Airmail Plate Block of 4 48c Postage Stamps - ScottC133 - (CW84a)
1999 Rio Grande Airmail Block of 4 40c Postage Stamps - MNH, OG - Scott C134
1999 Rio Grande Airmail Single 40c Postage Stamp - MNH, OG - Scott C134
2001 Acadia National Park, Maine Plate Block Of 4 60c Postage Stamps - Scott C138 - DM169
2001 Mount McKinley Airmail Plate Block Of 4 80c Postage Stamps - MNH - Scott C137 - CW83
2001 Mount McKinley Airmail Single 80c Postage Stamp - MNH - Scott C137 - CW83
2001 Nine-Mile Prairie, Nebraska Plate Block Of 4 70c Postage Stamps - Scott C136 - DM167
2006 Bryce Canyon National Park, Utah Plate Block Of 4 63c Postage Stamps - Scott C139 - DM168
2006 Bryce Canyon National Park, Utah Single 63c Postage Stamp - Scott C139 - DM168a
2006 Yosemite National Park Single 84c Postage Stamp - MNH, OG - Scott C141
2007 Hagatna Bay, Guam Plate Block Of 4 90c Postage Stamps Scott C143 - MNH - DM164a
2007 Hagatna Bay, Guam Single 90c Postage Stamp Scott C143 - MNH - DM164b
2007 Okefenokee Swamp, Georgia, Florida Plate Block of 4 Postage Stamps - MNH, OG - Scott C142
2008 13 Mile Woods, NH Single 72c Postage Stamp - MNH, OG - Scott C144
