(book) "Cromwell". New York: Grove Press, 2001. ISBN 0802137660
(book) "Faith and Treason: The Story of the Gunpowder Plot". New York: Doubleday, 1997. ISBN 0385471904
(book editor) "The House of Windsor". Berkeley, CA: University of California Press, 2000. ISBN 0520228030
(book editor) "The Houses of Saxe-Coburg-Gotha". Berkeley, CA: University of California Press, 2000. ISBN 0520228014
(book editor) "The Lives of the Kings & Queens of England". Revised and updated edition. Berkeley, CA: University of California Press, 1998. ISBN 0520219384
(book) "Marie Antoinette: The Journey". New York: Doubleday, 2001. ISBN 038548948X
(book) "Mary Queen of Scots". Reprint edition. Addlestone, Surrey, England: Delta Publishing, 2001. ISBN 038531129X
(book) "Quiet As a Nun". W.W. New YOrk: Norton & Company, 1998. ISBN 0393318222
The Weaker Vessel: Woman's Lot in Seventeenth-Century England