Please click in the following areas to view a selectoin of Gillespie's landscape drawings: The Great Plains, Pacific Northwest, and California. To view all of Gillespie's drawings, click on the link to the left.
Map taken from the Library of Congress website.
Search under this heading: Map of the United States of America, the British Provinces, Mexico, the West Indies and Central America, with part of New Granada and Venezuela / map drawn by Geo. W. Colton ; engraved by John M. Atwood ; border desigd. & engd. by W.S. Barnard.