If you contact the Bureau County Genealogical Society, you do NOT need to know the name of the newspapers. They have indexed the NAMES of all of the people listed in ALL of Bureau Co.'s newspapers up to 1916. See their newspaper info on their website: http://www.rootsweb.ancestry.com/~ilbcgs/newspapers.htm
They have a wonderful card index file that they look up the SURNAME, then the GIVEN name and it will give them sources of information such as newspapers, edition date, page/column # of where that name is found. They archive their newspapers on microfilm on site. They are wonderful people and very helpful.
Best of luck.
Family History Coordinator
Tampico Area Historical Societywww.tampicohistoricalsociety.com