Remarkable large format railroad map of New Mexico Territory. The earliest separately issued map of New Mexico Territory in its modern configuration to appear in a commercial atlas . The map illustrates the early railroads, settlements, mining districts, Indian reservations, forts and other important early features.
Asher & Adams' atlas was one of the first United States atlases to exclusively feature railroad lines, showing minimal topography (in this later edition more topographical features are added, earlier editions have fewer features shown), and only showing towns on or next to the railroads lines. The 1874 edition is the first to include a separate map of New Mexico Territory.