The 6-cent Waterfowl Conservation stamp, the first in the annual series that pointed to the need for protecting wildlife, was first placed on sale at Cleveland, Ohio, on October 24, 1968.
The stamp depicting wood ducks recognized the accomplishments of Ducks Unlimited, an organization that had spent nearly $15 million for waterfowl conservation. Scattered across the prairies were some 900 Ducks Unlimited projects involving roughly a million and a half acres heavily populated with waterfowl.
The stamp was designed by Stanley W. Galli of California and was issued in panes of fifty, with an initial printing of 120 million.
Postal Bulletin (October 17, 1968).