Mercer County Genealogy
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Mercer Countywide Sources
1790-1940 U.S. Federal Census Records
BillionGraves Cemetery Records Index Family Search
Cemetery records of Mercer County, Illinois Family History Library
Cemetery records, Mercer County, Illinois Family History Library
Federal Land Patents Bureau of Land Management
Find A Grave Gravestone, Tombstone, and Memorial Photo Collection World Vital Records
Historical Encyclopedia of Illinois and History of Mercer County
Historical encyclopedia of Illinois Family History Library
History of Mercer County, Illinois, 1882-1976 : gathered from the newspapers of the county; papers of the Mercer County Historical Society; papers, letters, tracts and organizational publications furnished by orgainizations and residents of the county Family History Library
History of Mercer County, together with biographical matter, statistics, etc. : gathered from matter furnished by the Mercer County Historical Society, interviews with old settlers, county, township and other records, and extracts from files of papers, pamphlets, and such other sources as have been available, containing also a short history of Henderson County Family History Library
History of Mercer and Henderson Counties HathiTrust Digital Library
History of Mercer and Henderson Counties : Together With Biographical Matter, Statistics
History of Mercer and Henderson counties : together with biographical matter, statistics, etc. gathered from matter furnished by the Mercer and Henderson County historical societies, interviews with old settlers, county, township and other records, and extracts from files of papers, pamphlets, and such other sources as have been available Family History Library
Illinois Deaths and Stillbirths Index, 1916-1947
Illinois Marriage Index, Mercer (1835-1900) Illinois State Archive
Illinois Marriage Records 1860 - 1905 Archives
Illinois Marriages To 1850
Illinois Marriages, 1790-1860
Illinois Marriages, 1851-1900
Illinois, Births and Christenings, 1824-1940 Family Search
Illinois, Marriages, 1815-1935 Family Search
Illinois, Probate Records, 1819-1970 Family Search
Mercer County (Illinois), land atlas & plat book, 1979 Family History Library
Mercer County Almshouse Register Index (1859-1948) Illinois State Archive
Mercer County, Illinois almshouse register, 1859-1986 Family History Library
Review-atlas salutes : back in 1942 Ralph Eckley needed a job so he wrote a salute to towns of the area; much history is written in the articles; every effort has been made to copy the newspaper articles from the microfilm; some are more legible than others Family History Library
The key to genealogical research in the quad-cities area : consisting of Rock Island and Mercer Counties in Illinois, and Scott County, Iowa Family History Library
Township plat book of Mercer County, Illinois : supplement of the official directory of Mercer County; 1935 Family History Library
U.S. Federal Census 1790-1940 Family Search
United Presbyterian Church ref. History of Mercer and Henderson Counties. Biggsville Public Library, Biggsville IL p 1340 US Gen Web Archives
More Mercer County records are available on the statewide page