The J. Ross Clark, San Pedro, Los Angeles & Salt Lake Railroad series (1902-1921) contain the office files of J. Ross Clark, second Vice President of the San Pedro, Los Angeles & Salt Lake (SPLA&SL) Railroad, and younger brother of Montana Senator William Clark, who owned the railroad until he sold it to E.H. Harriman of the Union Pacific Railroad. J. Ross Clark’s Empire Construction company was responsible for the construction of the SPLA&SL Railroad. These files contain correspondence concerning Helen Stewart’s Las Vegas Ranch, which the railroad purchased, the management of the ranch after the Railroad took possession, the laying out of the Las Vegas townsite, the subsequent auction of the town lots, and the construction of the early railroad buildings in Las Vegas and California.