Two horse-drawn wagons on the road between the Painted Desert and the San Francisco Mountains, Arizona, ca.1900 

Five Navajo Indian wagons outside Hubbell's Indian Agency Store, Ganado, Arizona, ca.1870-1905 

Drawing by Tom Hill, called "Crossing the Plains," showing a chain of ox-drawn covered wagons, ca.1850 

Navajo Indian standing alone on the Painted Desert, Arizona, ca.1900 

Travelers and an ox-drawn wagon on the road east from Oregon, ca.1932 

Men in a tavern in Southern California, ca.1890-1900 

A horse team (desert freighters) starting for Bullfrog from Las Vegas, Nevada, ca.1895-1905 

Mission San Xavier del Bac, showing small Indian structures, Tucson, Arizona, ca.1898-1900 

Horse-drawn wagons hauling grain to depot, ca.1920 

The painting "The Covered Wagon" by George Woodworth, ca.1850 

Ezra Meeker arrives in Los Angeles area by oxcart to witness first great airmeet, 1910 

Adam Harmer, first Superintendent of the Petrified Forest of Arizona, standing on a tree bridge, ca.1900 

Mammoth petrified log in the petrified forest of Arizona, ca.1900 

A petrified log forming a tree bridge in the Petrified Forest of Arizona, ca.1900 

View of a train crossing a bridge over Canyon Diablo on a Navajo reservation in Arizona, ca.1900 

Three men standing on two wagons near a tank of water in Death Valley, ca.1900 

Mission San Gabriel, California, showing stone steps leading to choir loft, ca.1890 

Twelve-horse team pulling three covered wagons with a single jerk line to horses as they team overland, ca.1898 

Imperial County whirlwind on desert, ca.1910 

A carreta driven between Mexico and El Pueblo de Los Angeles, ca.1895-1930