Irving, Washington New York: March 8th, 1837. 4to. 4 pp. To United States Consul Col. Thomas Aspinwall regarding the pubication of Irving's "The Rocky Mountains: or, Scenes, Incidents, and Adventures in the Far West; Digested from the Journal of Captain B. L. E. Bonneville…": "If you case your eye on the work you will perceive that it is full of striking scenes and adventures: characteristic of an immense and very interesting region, very little known…and laying open a kind of wild life among the mountains of which the public have very little idea…I cannot but think, therefore, that the work will command attention and circulation; and ought to be paid for accordingly." Creasing from original folds, a few spots on first two pages; in brown cloth-covered folder. With: Putnam, G.P. New York: January, 17, 1857. 8vo. 4 pp. On G.P. Putnam & Co. stationery. To author and editor B.I. Lossing regarding illustrations to Washington Iriving's "The Life of George Washington." Creasing from original folds.