The standard reference for locating library holdings of American newspapers published between 1821 and 1936 is:
Winifred Gregory, Editor, "American Newspapers, 1821-1936: A Union List of Files Available in the United States and Canada" (New York: H. W. Wilson Co., 1937; Reprinted Millwood, NY: Kraus Reprint Corporation, 1967)
If you tell us which city is closest to your location I can tell you the nearest cities with library holdings of Des Moines and Henry Co. newspapers published during 1854.
Major collections of microfilmed Iowa newspapers are in Des Moines and Iowa City.
Dale H. Cook, Member, NEHGS and MA Society of Mayflower Descendants;
Plymouth Co. MA Coordinator for the USGenWeb Project
Administrator of
http://plymouthcolony.net