Relief shown by hachures and spot heights. Red shows motor roads, primitive areas and game refuges. "Compiled at Regional Office, Denver 1929 from USGS, GLO, Forest Service and other surveys. F.A. Silcox, Chief, Forest Service, T.W. Norcross, Chief, Division of Engineering." "New Mexico and Sixth principal meridians. North American datum." Verso: Text and photographs on multiple uses of the forest and mileage table. No acc. no.