Plates Issued: Intaglio (front)- #169058, #169063; Offset (back) - #55048. Colors: Front - Black, Blue, and Green; Back - Black. Designer/Modeler: Howard C. Mildner. Engravers: Vignette - Charles A. Brooks; Frame - William R. Burnell and Howard F. Sharpless; Letters - William R. Burnell and Howard F. Sharpless; Numerals - William R. Burnell and Howard F. Sharpless. First Day of Sale: July 1, 1966. Issue: 1966 - Thirty-third Duck Stamp (eighth $3 stamp). Quantity Sold: 1,805,341.
Inscription: Front - "U.S. Department of the Interior. Void after June 30, 1967. Migratory Bird Hunting Stamp. $3. Whistling Swans. Back - "Duck Stamps dollars buy wetlands to perpetuate waterfowl. It is unlawful to hunt waterfowl unless you sign your name in ink on the face of this stamp."
Black and white tempera drawing of Whistling Swans (now known as Tundra Swans) by Stanley Stearns, the second artist to win the contest three times.
Content taken from the Duck Stamp Collection. The Duck Stamp Collection was originally printed in a loose-leaf, hole-punched format that was available for sale through the U.S. Government Printing Office (GPO) and updated annually. The document is no longer in print.