The Post Office Department issued the deep green 3-cent stamp featuring an image of the White House on June 12, 1950, in Washington, DC. The stamp is one of four stamps commemorating the 150th anniversary of the nation's capital. The Bureau of Engraving and Printing produced 376,789 stamps of this issue.
Designed by W.K. Schrage and engraved by M.D. Fenton, this stamp features the text "Washington" (centered on top), flanked by "1800" and "1950." The image of the White House sits atop the words "National Capital Sesquicentennial." The denomination appears in the upper left, and in the upper right appear words "US Postage."
James Hoban designed the White House. Stamps issued in 1981 honored Hoban.
The Bureau of Engraving and Printing produced this stamp in deep green on a rotary press using an Electric Eye plate with perforations 10 1/2 x 11. The stamp was issued in subjects of two hundred, with four panes of fifty stamps each.
Kloetzel, James E., ed. 2008 Specialized Catalogue of United States Stamps and Covers. 86th ed. Sidney, Ohio. Scott Publishing Co., 2009.
Allen, Bob. "US Stamps 1847USA Knowledge is Power." http://1947usa.com/identify/YearSets/1950.htm