"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.”
Marshall Cohen—researcher and producer, CNN
Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
In response to their presumed threat, President Lincoln assumed extraordinary executive powers including censorship, suppression of the press, arrests, and suspension of habeas corpus. One of the strongest supporters of the Copperhead Movement was Dubuque newspaper editor Dennis MAHONY.