Sproule, William
Description
president of the Wells Fargo Express Company and later the Southern Pacific Railroad
https://en.wikipedia.org/wiki/William_Sproule
"...retained presidency of SP's [Southern Pacific] Pacific Lines."
p. 115-116, The Southern Pacific, 1901-1985, by Don L. Hofsommer, Texas A&M University Press, 1986. https://books.google.com/books?isbn=1603441271
