The Escondido Sub formerly served one of the larger railroads in the United States that was chartered in what year?
Atchison, Topeka and Santa Fe Railway: The Atchison, Topeka and Santa Fe Railway (reporting mark ATSF) , often referred to as the Santa Fe or AT&SF, was one of the larger railroads in the United States. Atchison, Topeka and Santa Fe Railway:  Chartered in February 1859, the railroad reached the Kansas-Colorado border in 1873 and Pueblo, Colorado, in 1876.
i don't know