Dubuque CountyThe History of Dubuque County, Iowa...Chicago: Western Hist. Co., 1880. - index, 4 bios online, all bios online*
Portrait and Bographical Record of Dubuque, Jones and Clayton Counties,..., Chicago: Chapman Pub. Co., 1894. - index online, 86 bios online
History of Dubuque County, Iowa, by Weston A. Goodspeed, ed. by F. T. Oldt and P. J. Quigley. Chicago: Goodspeed Hist. Assoc. [1911?]. - 3 bios online
Dubuque County History, Iowa, comp. by W.P.A. [Dubuque: N.p.], 1942.
Faith and Fortunes: An Encyclopedia of Dubuque County, by Lyon, Randolph W. Dubuque, IA: Flynn Printing and Graphcs, 1998
Other Dubuque County biographies - 6 bios online