- ^ "William Sproule, Rail Man, Is Dead. Former Head of the Southern Pacific Began Work in 1882 as Freight Clerk. Saw System Improved. Facilities Extended Under His Guidance. Initiated Policies to Aid Employees". New York Times. January 2, 1935. Retrieved 2009-08-18.
William Sproule, former of the Southern Pacific Railway Company, died at his home here tonight. Mr. Sproule was closely associated with extension of ...
- ^ "Uniting the Roads". Time magazine. July 28, 1924. Retrieved 2009-08-18.
He came to this country with an education, an affable disposition and ability that went straight to the mark. He began as a freight clerk on the Southern Pacific. In the course of 24 years of continuous service in the company he rose to the position of Traffic Manager. Then the Guggenheims, ever watchful for talent, secured him as traffic manager−member of the executive committee for the American Smelting and Refining Co. Then the Wells Fargo Express Co. got him for its President. In 1911 the Southern Pacific which had got along without Sproule for five years decided it could get along without him no longer. Sproule went back, as President of the road.