The 13-cent North Dakota State Flag issue (Scott 1671) depicts the state flag adopted by the North Dakota Legislative Assembly on January 21, 1911. The legislation specifically required that the flag conform to the color, form, and size of the regimental flag carried by the North Dakota infantry during the Spanish-American War (1898) and Philippine Island Insurrection (1899), the only exception being that “North Dakota” was to be displayed on the scroll below the bald eagle.
North Dakota's dark blue field serves as a backdrop for a bald eagle clutching an olive branch and a bundle of arrows. In its beak the eagle carries a ribbon with the words “One nation made up of many states." The shield on its breast has thirteen stars, representing the original thirteen states. The fan-shaped design above the eagle represents the birth of the new nation, and the name "North Dakota" appears on a red scroll below the eagle.
Scott 2005 Specialized Catalogue of U.S. Stamps and Covers