The Chicago Historical Homicide Project began with the discovery a handwritten log of more than 11,000 homicides "maintained consistently and without interruption by the Chicago Police Department over the course of 60 years, from 1870 to 1930." Now these handwritten documents have been transformed into a searchable database providing a unique view into the history of Chicago during this period. The website also hightlights some of the most well-known crimes of the period including the trial of Leopold and Leob, the race riots of 1919, and the Haymarket Affair. This is really an incredible resource so go check it out.