"A History of the Early Croats" discusses the ethno-genesis of the Croats and details the history of the early Croats, from the emergence and evolution of the proto-Croatian tribes to the establishment and demise of the various Croatian national states throughout the ancient times and the medieval periods.

Volume I discusses the history of the major Balkan nationalities. It describes the differing conditions experienced under Ottoman and Habsburg rule, but the main emphasis is on the national movements, their successes and failures to 1900, and the place of events in the Balkans in the international relations of the day.