American Library Association Notable Book award and the ASPCA Henry Bergh Children's Book Award. However, one year after its publication, it became the single most banned or challenged book in the United States. According to the American Library Association, Tango was the most banned book in the Country for the years 2006, 2007, 2008, and 2010. (It was number 2 in 2009 and number 5 in 2012). Parnell and Richardson also later collaborated on Christian, the Hugging Lion (Simon & Schuster), a children's picture book about the true story of Christian the lion. In later years Richardson was the psychiatric advisor for the second and third season of the HBO series In Treatment starring Gabriel Byrne. Richardson was born in Greenwich Village in 1963 and grew up in Rockland County, NY. He received his undergraduate, graduate, and medical degrees from Harvard. He was Chief Resident in Psychiatry at Harvard's McLean Hospital before joining the faculty of Columbia University College of Physicians & Surgeons. He lives in Greenwich Village with Parnell and their daughter. References Living people 1963 births American children's writers 21st-century American writers American gay writers Harvard Medical School alumni Harvard University alumni