My best references are some of the books I've edited. I especially recommend:

Jody Carr: Monday's Child (HarperCollins)

Sue Carter: Ordinary Women: An Arctic Adventure (Michigan State University Press)

JoAnn Levy: For California's Gold (University of Colorado Press)

Susan Loesser: A Most Remarkable Fellow: Frank Loesser and the Guys and Dolls in his Life (Donald I. Fine)

Gloria Murphy: Down Will Come Baby (Donald I. Fine)

Claudia Osborn: Over My Head (Andrews McMeel)

Sol Stein: The Best Revenge (Random House)

Malinda Terreri: A Tax Deductible Death (Berkley Prime Crime/Penguin Putnam)

Canon Edward West: Outward Signs; The Language of Christian Symbolism (Walker and Company)