This 6-stamp souvenir sheet was printed at the National Stamp Exhibition. It was issued without gum or perforations. The sheet was only available at the exhibition while it was in progress. After February 19, it was placed on sale through the Philatelic Agency. Byrd’s Second Trip to “Little America” In 1933, Rear Admiral Richard Byrd made plans to return to the U.S. exploration station in Antarctica nicknamed Little America. When he paid a visit to Franklin Roosevelt before leaving, the President reportedly said, “Don’t forget to send me a cover from Little America for my stamp collection.” This led to the President’s recommendation to the Postmaster General for a stamp honoring Byrd’s achievements. It would pay the postage from Little America. The stamp’s design is based on a rough sketch made by FDR.