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.
2018 Yuri Slezkine (University of California, Berkeley), for The House of Government: A Saga of the Russian Revolution (Princeton University Press, 2017).
- 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).
2011 Amanda Podany (California State Polytechnic University, Pomona), for Brotherhood of Kings: How International Relations Shaped the Ancient Near East (Oxford University Press, 2010)
- 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).