Chicago (Zbigniew Bzdak / July 1, 2011)

1906: White Sox beat Cubs in World Series.

1907: Utility magnate Samuel Insull creates Commonwealth Edison Co.

1907: "Injun Summer" cartoon first appeared in Tribune

1907: Cubs win first World Series title.

1908: State and Madison becomes zero point in cleaned-up numbering grid.

1909: Daniel Burnham and Edward Bennett publish "Plan of Chicago."

1910: Stockyard fire kills 22 firefighters, including the chief.

1911: Infant Welfare Society of Chicago established.

1911: International Air Meet energizes the city with the thrill of flight.

1912: The Rouse Simmons, delivering the annual supply of Christmas trees, sinks.

1913: Art Institute hosts famous Armory Show of modern art.

1914: Weeghman Park opens (later renamed Wrigley Field).

1914: First aldermanic election in which Chicago women can vote.

1915: First Chicago mayoral election in which women can vote.

1915: John Hertz starts Yellow Cab Co.

1915: The excursion boat Eastland overturns in Chicago River, killing 844.

1916: Municipal Pier opens (later renamed Navy Pier).

1917: At least seven barbers' homes or barbershops bombed in union dispute.

1918: Morals inspector M.L.C. Funkhouser, who battled prostitution and was official film censor, is ousted.

1919: Race riots kill 38 and injure hundreds.