For the most distinguished book on any historical subject submitted by a scholar who resides within the twenty–two Western states or four Canadian provinces from which the Branch draws its membership.
2017 Jessica Marglin (University of Southern California), for Across Legal Lines: Jews and Muslims in Modern Morocco (Yale University Press, 2016).
2016 Lorraine K. Bannai (Seattle University), for Enduring Conviction: Fred Korematsu and His Quest for Justice (University of Washington Press).
- Honorable mention: Keith David Watenpaugh (University of California, Davis), for Bread From Stones: The Middle East and the Making of Modern Humanitarianism (University of California Press, 2015).
2015 Charles F. Walker (University of California, Davis), for The Tupac Amaru Rebellion (Harvard University Press).
2014 Billy G. Smith (Montana State University), for Ship of Death: A Voyage that Changed the Atlantic World (Yale University Press).
2013 Susan Schulten (University of Denver), for Mapping the Nation: History and Cartography in Nineteenth-Century America (University of Chicago Press).
2012 Nayan Shah (University of Southern California), for Stranger Intimacy: Contesting Race, Sexuality, and Law in the North American West (University of California Press).
2011 Amanda Podany (California State Polytechnic University, Pomona), for Brotherhood of Kings: How International Relations Shaped the Ancient Near East (Oxford University Press, 2010)
2010 Marsha Weisiger, for Dreaming of Sheep in Navajo Country (University of Washington Press)
- Honorable mention to Terry Rugeley for Rebellion Now and Forever: Mayas, Hispanics, and Caste War Violence in Yucatán, 1800–1880 (Stanford University Press).
2009 Brian DeLay (University of California, Berkeley), for War of a Thousand Deserts: Indian Raids and the U.S.-Mexican War (Yale University Press), and Pekka Hamalainen (Univ. of California, Santa Barbara), for The Comanche Empire (Yale University Press).
- Honorable mention to Thomas Andrews, for Killing for Coal: America’s Deadliest Labor War (Harvard University Press).
2008 James Vernon (University of California, Berkeley), for Hunger: A Modern History (Harvard University Press).
2007 Natalia Molina, for Fit to be Citizens? Public Health and Race in Los Angeles, 1879-1939 (University of California Press).