Circus, first, in Chicago, [71]

City and town dwellers, proportion of, [195], [196]

Civil War, see [Secession, War of]

Clay, Henry, [15], [164]

Clermont, Fulton's steamboat, [7]

Cleveland, Ohio, [73]

Collins Line, [131]

Colt's pistol, [130], [131]

Columbus, Reaper traced back to, [17]

Congress, first recognition of Chicago by, [72];
Lincoln elected to, [72];
patent suits carried to, [91], [92];
how inventors have been treated by, [95]