Atwood, John M., approximately 1818-This map of the United States shows the country as it was in 1848, before the massive territorial expansion that followed the War with Mexico.; Prime meridian: Washington.; From: Phelps' travelers' guide through the United States. New York, 1848.; Insets: Northern Maine -- Southern Florida -- Philadelphia -- Baltimore -- New York -- Boston -- Pittsburgh -- St. Louis -- Cincinnati -- Chicago.; Surrounding the map are artistic portraits of the first eleven presidents as well as other important early statesmen and explorers, state seals, a sketch of the signing of the Declaration of Independence and an artistic representation of the Great Seal of the United States.45 x 56 centimetersJPEGUMN_ALMA:9974819805801701engEnsigns & Thayer (New York), 1845PublicPhelps's national map of the United States : a travellers' guide : embracing the principal rail roads, canals, steam boat & stage routes, throughout the UnionMapsUniversity of Minnesota