Insurance, [120], [223], [389], [516]

Interstate Commerce Commission, [637]

Inyo County, [386], [521]

Iowa, [576]

Iron buildings, corrugated, [120], [133], [190]

Ironsides, [352]

Irrigation, [115], [213], [215], [218], [329]

Irving party, [46], [175], [190]

Irving, Washington, [65]

Isthmuses, the, and Isthmian travel, [15], [38], [48], [201], [232], [315]