Pony Express Starts from St. Joseph. MISSOURI HISTORICAL Review. 1948 V.43. #l BRAND Book, Chicago. VIII 3, war.-iaay 1946. Pony Express by son of a pony express rider. Improvement Era, Feb. i940. pp.78-79, 124. Joseph Waiker on the Pony.Fxpress.trail. From the diary of Zenas Leonard. Pony Express iiar.1949. p.iJ-il