Cooke's Wagon Road

Cooke's Wagon Road was the first wagon road between the Rio Grande and the Colorado River to San Diego, through the Mexican provinces of Nuevo México, Chihuahua, Sonora and Alta California, established by Philip St. George Cooke and the Mormon Battalion, from October 19, 1846 to January 29, 1847 during the Mexican American War. It became the first of the wagon routes between New Mexico and California that with subsequent modifications before and during the California Gold Rush eventually became known as the Southern Emigrant Trail.

On February 22, 1847 Philip St. George Cooke submitted a report of his journey, printed by the U. S. Senate in 1849, as the Official Journal of Lieutenant Colonel Philip St. George Cooke from Santa Fe, in New Mexico, to San Diego, in Upper California]. This report recorded his experience in command of the Mormon Battalion and its expedition to establish the wagon route that soon became known to the Forty-niners and later travelers who followed that route as Cooke's Wagon Road or Cooke's Road. Later in 1878 Cooke wrote a book "The Conquest of New Mexico and California" that covered the journey but in less detail than his original report.

Cooke's Road began from his last camp on the west bank the Rio Grande "across the river from San Diego", 258 miles southwest of Santa Fe, New Mexico and 29 miles down the river from the camp where Colonel Stephen W. Kearny's Expedition left the Rio Grande, for California, crossing the mountains to the headwaters of the Gila River, which he then followed downstream to its confluence with the Colorado River. Cooke was ordered to take the wagons Kearny could not take with him in the rugged terrain of the New Mexico mountains, and build a wagon road that they could traverse and link it up to his route farther west on the Gila River.

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