Clarke, Gerald Capote: A Biography, Simon & Schuster, 1988. A very readable and thorough biography of Capote While It is not an authorized biography, Capote cooperated with Clarke up until his death

Inge, in Thomas Truman Capote: Conversations, University Press of Mississippi, 1987.

A compilation of interviews with Truman Capote spanning 1948 to 1980 Provides insight into what Capote thought about the craft of writing and his childhood in the South

Moates, Marianne in "Truman Capote's Southern Years," in her 4 Bridge of Childhood, Holt, 1989, 240 p.

Moates provides background on Capote's childhood and family, including the cousin he fictionalized in "A Christmas Memory."