Past winners of the Philip F. Detweiler Prize
| 2009 | James Herbert | Militaristic Neutrality and Economic Imperialism: Woodrow Wilson's Foreign Policy |
| 2008 | Matthew Rielly | Bud: The Life and Times of an 18th Century British Slave Vessel |
| 2007 | David Shank | |
| 2006 | Robert Stafford | Camp Ford, Texas: A Reevaluation of Civil War Prisons. |
| 2005 | Ian Land | |
| 2004 | Eric Bradshaw | The Moctezuma Family's Presence In The Codex García Granados |
| 2003 | Laura Fries | Betty: A History Through Coookbooks |
| 2002 | Howard Wilen | Li Hung-chang: The Man Behind the Curtain |
| 2001 | Nathaniel Swigger | The Failure of Greatness: Daniel Webster and the Second Generation of American Politics |
| 2000 | Michael K. Ryan | Economic Interests and the Abolitionist Crusade |
| 1999 | Adrian Johnson | Dolores before Hildago: A Snapshot of the Parish in 1785 |
| 1998 | Erin Baxter | An Assessment of an Historical Manuscript Collection: A Case Study of the A. A. Green Papers, San Miguel de Allende, 1660-1884 |
| 1997 | Shayna S.Cook | Land of the Free? The Wilderness Ethic of William O. Douglass |
| 1996 | Dorian Irene Miller | Missionary Involvement in the Columbian Exchange |
| 1995 | Kim M.Munsinger | Perspectives on Human Rights in South Korea |
| 1994 | David A. Sartorius | 'Mexicanos de Afuera': La Prensa and San Antonio's Elite Exile Community, 1910-1920 |
| 1993 | Jennifer J. Popiel | Harlots and Heroes: The Women's March to Versailles in October 1789 |
| 1992 | Lara Jennifer Moore | Home is Where the Hearth Is: The Living Room and the American Family |