Preliminary sketch of the Northern Pacific Rail Road exploration and survey, by I. I. Stevens, Governor of Washington Territory. Sheet [1] From St Paul to Riviere des Lacs.–Sheet [2] From Riviere des Lacs to the Rocky Mountains.–Sheet [3] From the Rocky Mountains to Puget Sound. Stevens, Isaac Ingalls, 1818-1862. CREATED/PUBLISHED Phila[delphia], [1855] (map 2 of 3.)