- Author: Katherine S. Newman, Rourke O'Brien
- Language: English
- Year: 2011
- Author: Fran Lloyd, Catherine O'Brien
- Language: English
- Year: 2001
- Author: Walter Wadlington Raymond C. O'Brien & Robin F. Wilson
- Language: English
- Year: 2021
- Author: Sharon O'Brien, Federico Federici
- Language: English
- Year: 2020
- Author: O'Brien Dan
- Language: English
- Year: 2019
- Author: John M. Clum, Cormac O'Brien
- Language: English
- Year: 2018
- Author: David J. O'Brien, Valeri V. Patsiorkovski, Larry D. Dershem
- Language: English
- Year: 2000
Great Plains Bison
epub
- Author: Dan O'Brien
- Language: English
- Year: 2017