I.

Illinois, trade with, 66; growth of population, 116, 156; canal fever, 157, 161; railway projects, 171; influence of river trade on, 180.

Illinois (lake steamer), 168.

Illinois Central Railroad, 170.

Illinois-Michigan Canal, 157-158, 161, 167, 168.

Illinois River, French on, 20.

Independence (Mo.), Overland Trail from, 189.

Indiana, migration to, 67; growth of population, 116, 156; canal enthusiasm, 161; railway projects, 171; influence of river trade on, 180.

Indians, trails, 14, 18; pack-horse trade with, 21, 27.

Ingles ferry, 47.

Iowa, influence of river trade on, 180.