Relief shown by hachures., "To accompany annual report, 1892, W.A. Jones, major, Corps of Engineers.", "Eng 52 2.", Shows roads completed in 1891 and roads completed prior to 1891.
U.S Department of Agriculture, Forest Service ; compiled in the Regional Office, Denver, Colorado..., Relief shown by spot heights., Includes insert, source diagram and key map., On verso: Text and ill.