The Clutch of the Corsican: A Tale of the Days of Downfall of the Great Napoleon. Boston, Little, Brown, 1925, 241p.
Highroads of Peril: Being the Adventures of Franklin Darlington, American, Among the Secret Agents of the Exiled Louis XVIII, King of France. Boston, Little, Brown and Company, 1926, 322p.
Alas, Poor Yorick! Being Three Hitherto Unrecorded Adventures In the Life of the Reverend Laurence Sterne, A.B., Vicar of Coxwold In Yorkshire, Etc., Etc.. Boston, Little, Brown, and Co., 1927, 263p.
The Red Prior's Legacy: The Story of the Adventures of an American Boy in the French Revolution. London, Longmans, Green, 1929, 256p.
The Wolf In the Garden. New York, Longmans, Green, 1931, 287p.
The Ring of Danger, A Tale of Elizabethan England. New York, A.A. Knopf, 1948, 259p.
Non-Fiction
Astrophel; or, The Life and Death of the Renowned Sir Philip Sidney. New York, Toronto, Farrar & Rinehart, Inc., 1937, 372p.
The Beleaguered City: Richmond, 1861-1865, New York, Knopf, 1946, 313p.
Rehearsal for Conflict; the War with Mexico, 1846-1848. New York, A.A. Knopf, 1947, 342p.
The Campaign of Princeton, 1776-1777, Princeton, N.J., Princeton Univ. Press, 1948, 145p.
Valley Forge; the Making of an Army. New York, Harper, 1952, 259p.
A House called Morven, Its Role in American History, 1701-1954 (with Walter E. Edge). Princeton, N.J., Princeton University Press, 1954, 206p.
1978 edition from Princeton University Press (ISBN 0-691-04641-7, 228p.) was revised by Constance M. Greiff.