↑(en) Goldthwait Nathan Edward, History of Boone County, Iowa, vol. 1, Des Moines, Pioneer Publishing Company, , p. 203
↑(en) « Ogden, Iowa » [« Données sur la ville d'Ogden, Iowa »], sur le site city-data.com (consulté le )
↑(en) Chicago and North Western Railway Company, A History of the Origin of the Place Names Connected with the Chicago & North Western and Chicago, St. Paul, Minneapolis & Omaha Railways, Pioneer Publishing Company, , p. 109