One noted biography about Oprah Winfrey is "Oprah: A Biography" by noted biographer Kitty Kelley. Kelley's book was published in 2010. Other biographies about Winfrey include "Oprah Winfrey" by Robin Westen from the African-American Icons series and "Oprah Winfrey" by Katherine Krohn, part of the Just the Facts series.
Kelley's biography, which was well-reviewed, was based on interviews with Winfrey's relatives, co-workers and ex-lovers, with an eye to stories that paint Winfrey in a negative light. The unauthorized biography is comprehensive, beginning with Winfrey's childhood through her early years in television. Although the biography is well-sourced, reviewers commented on the difficulty of recognizing the source of certain quotes.