Maintained by the Chicago Public Library; includes facts about city history and politics, a timeline and guides to city resources.

An organization interested in preservation, Forgotten Chicago's goal is to "discover and document little known elements of Chicago’s infrastructure, architecture, neighborhoods and general cityscape, whether existing or historical."

Photos and information from archives throughout Chicago

Over 55,000 images of urban life between 1902 and 1933 by photographers employed by the Chicago Daily News, then one of Chicago's leading newspapers.

Use ChicagoAncestors.org to point you towards historical collections related to Chicago's history. You can search by address or browse by collection or by category.

An online exhibition from the Chicago History Museum and Northwestern University including photos, artifacts, a bibliography and original eyewitness accounts and reporting of the Great Chicago Fire of October 8-10, 1871.

Maintained by the Chicago Public Library; includes facts about city history and politics, a timeline and guides to city resources.

Dating from 1867 to 1970, Sanborn fire insurance maps not only provide a snapshot of an Illinois city or town during a certain time period, but may also provide detailed information for individual buildings such as size, shape and construction materials, heights, and function of structures, location of windows and doors. Maps also provide street names, street and sidewalk widths, property boundaries, building use, and house and block numbers.

This site allows you to search and view newspaper pages from 1880-1922 and find information about American newspapers published between 1690-present.

An organization interested in preservation, Forgotten Chicago's goal is to "discover and document little known elements of Chicago’s infrastructure, architecture, neighborhoods and general cityscape, whether existing or historical."

Inter-faith links to religious organizations of wide range of religious organizations with a presence in the Chicago area.

The years between 1870 and 1930 marked the emergence of Chicago as a dominant American city, during that time, the Chicago Police Department Homicide Record Index chronicled 11,000 homicides in the city.