Other works

The Annual Term of Military Service in Medieval England (1960 book)

The Military Organization of England Under the First Three Norman Kings, 1066-1135 (1960 book)

The Five-Hide Unit and the Old English Military Obligation (1961 book)

The Norman Conquest and the Genesis of English Feudalism (1961

The Significance of Scutage Rates in Eleventh- and Twelfth-Century England (1961 book)

Anglo-Saxon Military Istitutions on the Eve of the Norman Conquest (1962 book)

Medieval Europe: A Short History (1964 book)

The Making of England, 55 B.C.-1399 (1966 book)

Roots of the Western Tradition: A Short History of the Ancient World (1966 book)

The Rise and Development of Western Civilization (1967 book, with John L. Stipp and Allen W. Dirrim)

Landmarks of the Western Heritage Since 1500 (1967 edited book)

The Rise and Development of the Western Civilization: The Emergence of Man to the Present (1969 book with John L. Stipp, Allen W. Dirram, and Harold L. Bauman (1969 book)

The Impact of the Norman Conquest (1969 book)

The Twelfth Century Renaissance (1969 edited book)

The Moons of Meer (1969 novel, with Judy Pike)

"Oz and the Fifth Criterion" (1971 essay)

Landmarks of Western Heritage (1973 edited book)

Odysseus to Columbus: A Synopsis of Classical and Medieval History (1974 book)

River Through Time: The Course of Westen Civilization (1975 book, co-author)

Medieval Europe: A Short Sourcebook (1982 edited book)

Monarchy, Magnates, and Institutions in the Anglo-Norman World (1986 book)

King John and the Historians (book)

"Oz and the Fifth Criterion Revisted" (1996 essay)

Anglo-Norman Political Culture and the Twelfth Century Renaissance: Proceedings of the Borchard Conference on Anglo-Norman History, 1995 (1997 edited book)

Bibliographia Oziana (book, with Peter E. Hanff, James E. Haff, and Patrick M. Maund)