Differs from earlier versions in showing Navajo and other Indian reservations; the Southern Pacific r.r. runs to Phoenix, but not to Prescott; the Southern Pacific route to El Paso and the Santa Fe route in New Mexico have been redrawn; many new towns have been added in both Arizona and New Mexico, particularly along railroads; and in New Mexico, "Santa Ana" county has been absorbed by Bernalillo County and Roswell appears for the first time.
From O.W. Gray & Son's National atlas. Philadelphia, [1881?], In lower right margin: [Plate] 147., Map of "Mexico" (scale 1:7,920,000) on verso., Prime meridians: Greenwich and Washington., Relief shown by hachures., and Shows Southern Pacific R.R. reaching into southwestern New Mexico, and connecting with Denver & Rio Grande R.R.; and a line projected between Maricopa (Ariz.) and Prescott (Ariz.) In New Mexico, railroad runs west of Albuquerque.
In lower right margin: [Plate] 147., Map of "Mexico" (scale 1:7,920,000) on verso., Possibly from O.W. Gray & Son's National atlas. Philadelphia, [1880?], Prime meridians: Greenwich and Washington., Relief shown by hachures., and Shows Apache County in Arizona and Southern Pacific R.R. complete to Tucson. Also shows San Miguel County in New Mexico encompassing lands labeled Bernalillo and Valencia counties in earlier version; and Denver & Rio Grande R.R. reaching Santa Fe and Albuquerque.