2000 Audubon Stamp Sheetlet
1996 Audubon Stamp Sheetlet
2009 Audubon Conservation Sheet
1993 Audubon Sheetlet w/Folder
2012 Audubon Conservation Sheet
2002 37c John James Audubon
2008 42c Take Me Out to the Ballgame
2000 33c Legends of Baseball: Rogers Hornsby
Commemorative proof cards each feature a stamp from US #2991.
Fleetwood cover set celebrates 11th International Botanical Congress (1969).
For more than 75 years, the UN has worked toward international peace.