Books
- The Megan Crespi Series of Mystery Novels: KILLING FOR KLIMT, THE SCHIELE SLAUGHTERS, THE KOKOSCHKA CAPERS, THE MUNCH MURDERS, THE KOLLWITZ CALAMITIES, THE KANDINSKY CONUNDRUM. Next to come is THE MAHLER MAYHEM, in press now
- In Passionate Pursuit (Braziller, 2004)
- The Changing Image of Beethoven: A Study in Mythmaking (Rizzoli, 1987; paperback edition with new preface (Sunstone Press), 2008
- The Fantastic Art of Vienna (Ballantine Books, 1978)
- Egon Schiele (Braziller, 1976, with Italian, French, German, and Dutch editions; reissued 1986, 1994, 2001)
- Gustav Klimt (Braziller, 1975, with French, German, and Dutch editions; reissued 1986, 1990, 1994, 2001)
- Egon Schiele’s Portraits (University of California Press, 1974, reissued in paperback, 1990) nominated for the National Book Award, recipient of the Charles Rufus Morey Award
- Schiele in Prison (New York Graphic Society, 1973)