Librarian Note: There are many authors with the name John O'Brien. This profile contains various authors. See below for disambiguated authors. John 2^ O'Brien : Author of Leaving Las Vegas John 3^ O'Brien : Children's Book Author & Illustrator John 4^ O'Brien : Pseudonym of Patrick Joseph Hartigan, Poet John 5^ O'Brien : Pioneer of Person Centered Planning John 6^ O'Brien : Co-Founder and Editor of Review of Contemporary Fiction John 7^ O'Brien : GR Author, Horror, Post Apocalyptic, Science Fiction John 8^ O'Brien : GR Author, Environment John 9^ O'Brien : John O'Brien OFM, GR Author, Religion, Christian John 10^ O'Brien : Biography, author of At Home in the Heart of Appalachia John 11^ O'Brien : Business, Investment John 12^ O'Brien : Crime John 13^ O'Brien John 14^ O'Brien John 15^ O'Brien: New Zealand children's book author