The following databases are useful for Chicago genealogy research.
Chicago Police Department Homicide Record Index This on-line index of Chicago homicide victims was created by the Illinois Regional Archives Depository in Chicago. The Archives Depository also created theCook County Coroner's Inquest Record Index 1872-1911. Coroner's inquests are investigations of deaths under criminal or suspicious circumstances.
Index to Death Notices in Dziennik Chicagoski, 1890-1920 and 1930-1971. The Dziennik Chicagoski was a Polish-language newspaper which served Chicago's Polish community. This database was compiled by the Polish Genealogy Society of America.
Marriages in Chicago through 1915. This index of marriages in
Catholic Parishes in Chicago was also created by the Polish Genealogy
Society of America.