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- "*Prairie Song: A Field Report from My Patch of Indiana* (Nature book, illustrated by the author; Indiana University Press, 2009)
- "*On Listening: A Journey Through the Art and Science of Sound* (Science, Indiana University Press, 2013)
- "*The Butchering Art: Joseph Lister's Quest to Transform the Grisly World of Victorian Medicine* (Science & History, PublicAffairs, 2008)
- "*Elizabeth, the Queen Mother: The Life of a Remarkable Woman* (Biography, Overlook Press, 2002)
- "*Queen Elizabeth: Mother, Monarch, Matriarch* (Biography, Overlook Press, 1998)
- "*Royal Life: The World's Most Famous Monarchs* (History, Reader's Digest Association,1999)
- "*The Biographical Handbook of Presidents and First Ladies* (Reference, Simon & Schuster, 1995)
- "*The Presidents and Their Wives: A Biographical History of the American Presidency* (Reference, Quill Books, 1989)
- "*The Life and Times of Elizabeth II: A Pictorial History of a Remarkable Reign* (History, Reader's Digest Association, 1986)
- "*Elizabeth: The Queen Mother* (Biography, Charles Scribner's Sons, 1985)
- "*The Life and Times of Queen Elizabeth I: A Pictorial History of the Virgin Queen* (History, Reader's Digest Association, 1984)
- "*The Life and Times of Queen Elizabeth II* (History, Simon & Schuster, 1982)
- "*Women in the U.S. Congress* (Reference, Congressional Quarterly, 1980)
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- "*Behind This Cloak: Profiles of Presidential Wives from Edith Wilson to Rosalynn Carter* (Profiles, Stein and Day, 1975)
- "*The New Woman in America: From Colonial Times to the Present Day* (Social History, Franklin Watts, 1974)