The 3-cent Children's Stamp was released on December 15, 1956, in Washington, DC. The stamp was issued to promote friendship among the children of the world.
The stamp's central design feature a group of children, at the left and looking toward the right in the pleasurable prospect of attaining the radiant Key of Friendship with which to unlock the doors to peace. Ronald Dias designed the stamp.
In a light panel at the top is the lettering "Friendship - The Key to World Peace" in dark Gothic. Beneath the panel is the lettering "Children's Stamp 1956" arranged in two lines of white Gothic. In a light panel at the bottom is the lettering "United States Postage" in dark Gothic. The denomination "3c," also in dark Gothic, appears in light squares in each lower corner of the stamp.
The stamp is 0.84 by 1.44 inches in dimension, arranged horizontally, printed by the rotary process, electric-eye perforated, and issued in sheets of fifty. The color of the stamp is blue. The printing of 120,000,000 stamps was authorized.
Postal Bulletin (November 29, 1956).