La colección de sellos de pato de Jeanette C. Rudy

Lectura Adicional

Dos gansos canadienses emprenden el vuelo mientras el sol de la mañana ilumina la niebla que se eleva sobre el agua.
"Gansos mañaneros en vuelo"
Cortesía de Anthony Hathway/Dreamstime
  • Cotton, Ira W. The Congress Book 1995. Sixty-First American Philatelic Congress (August 25, 1995).
  • Duck Tracks, serial published by the National Duck Stamp Collectors Society, Delaware.
  • Dumaine, Bob and Eric Jay Dolin. The Duck Stamp Story: Art, Conservation, History. Iola, Wisconsin: Krause Publications, 2000.
  • Johnson, Lawrence. Federal Duck Stamp Story: Fifty Years of Excellence. Davenport, Iowa: Alexander & Co., 1984.
  • Lendt, David L. Ding. Iowa City: University of Iowa Press, 1989.
  • McBride, David P. The Federal Duck Stamps. Piscataway, New Jersey: Winchester Press, 1984.
  • Reiger, George. The Wings of Dawn: The Complete Book of North American Waterfowling. New York: Stein and Day, 1980.
  • The U. S. Fish and Wildlife Service website—
  • Torre, David R. Specialized Catalog of U.S. Non-Pictorial Waterfowl Stamps. Santa Rosa, California. David R. Torre, 1998.