May 132009
Founded on 12 August 1911 by Pope Saint Pius X. Suffragen of the Archdiocese of Dubuque, Iowa. Notable bishops include
- Archbishop Austin Dowling
- Archbishop George Joseph Biskup
- Archbishop Gerald Thomas Bergan
- Bishop Edward Celestin Daly
- Bishop John Joseph Boylan
- Bishop Joseph Leo Charron
- Bishop Maurice John Dingman
- Bishop Richard Edmund Pates
- Bishop Thomas William Drumm
- Bishop William Henry Bullock
See also