[Washington: GPO, 1957]. Offset-printed broadside in three colors, 21-1/2" x 17"; printed recto-only. Old folds, probably as issued; a few small nicks to extremities; Very Good or better. Announces the establishment of Pan American Week, April 8-14; and Pan American Day, April 14, and reprints the full text of Eisenhower's proclamation. Pan-American Day is still celebrated in some Latin American countries, though news of its establishment never seems to have made a lasting impression on the U.S. populace. Though clearly intended for display, this broadside is apparently scarce, with no example recorded in commerce and none catalogued in OCLC as of October, 2018.