Green Valley, (Cuyamaca Mountains, California)
Green Valley was the site of Lassiter's Ranch, used as a stop on the San Antonio-San Diego Mail Line. Mules carried passengers 18 miles up and down Upper Green Valley, Oriflamme Canyon, Vallecito Wash, Vallecito Creek and Carrizo Creek between the ranch and Carrizo Creek Station. From the ranch, they could ride or take a coach through Julian's Ranch, Williams' Ranch, Ames' Ranch, Mission San Diego, 67 miles to San Diego.
The coaches with baggage and other passengers staying with the coaches took the Southern Emigrant Trail to Rancho Valle de San Felipe through Warner Pass and then followed the old wagon road to San Diego from Warner's Ranch via San Ysabel, Rancho Santa María, San Pasqual and Rancho Peñasquitos.
- Green Valley, Cuyamaca Peak, CA, U.S. Geological Survey Geographic Names Information System: Green Valley, (Cuyamaca Mountains, California)
- U.S. Geological Survey Geographic Names Information System: Upper Green Valley
- Table of distances from Texas Almanac, 1859, Book, ca. 1859; digital images, (http://texashistory.unt.edu/ark:/67531/metapth123765/ accessed November 12, 2013), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting Texas State Historical Association, Denton, Texas
- San Antonio-San Diego Mail Line Stations derived from the newspaper article by a traveler to the Gadsden Purchase printed in the Sacramento Daily Union, 11 January 1858, p.4, A TRIP TO THE GADSDEN PURCHASE
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