Iona, [49].

Ionic dialect, [145], [146].

Ipswich skeleton, [19].

Iranian languages, [146], [158], [161].

Iranian plateau, [74], [127], [142], [157], [158].

Iranians, [163].

Ireland, [15], [17], [28], [30], [32], [44], [47], [49], [51], [54], [55], [60], [79], [98]–[100], [129], [130], [137], [144], [161], [166]–[169].

Irish gold fields, [44]–[46].

Irish language, [29].