29 x 36 cm. Shows natural features, and populated places, wagon route, proposed railroad routes and explorers' routes. Relief shown by hachures. Prime meridians: Greenwich and Washington. "Entered according to act of Congress in the year 1855 by J.H. Colton & Co in the Clerk's Office of the District Court of the U.S. for the Southern District of New York." Hand colored. Atlas p. number in lower-right margin: 51. Decorative border. The geographic region of Southwest is referred to as the New Southwest. Original publisher: J.H. Colton .

Illustration of Boulder City, in which many houses and neighborhoods can be seen. The caption reads: "Boulder City, Nevada. A model city built to house the workmen engaged on the Boulder Dam [later known as the Hoover Dam] Project."

Unveiling of a monument honoring Frank T. Crowe at Frank T. Crowe Memorial Park on Boulder City's 50th anniversary.