- 2024 Virtual
- 2023 UC Riverside
- 2022 Virtual
- 2020 UC Riverside (cancelled due to Covid)
- 2019 UC Merced
- 2018 UC Santa Barbara
- 2017 Victoria, British Columbia
- 2016 The Huntington Library
- 2015 University of Nevada, Las Vegas
- 2014 UC Riverside
- 2013 UC Berkeley
- 2012 The Huntington Library
- 2011 University of Washington, Seattle
- 2010 Pomona College
- 2009 University of San Diego
- 2008 The Huntington Library
- 2007 University of Puget Sound
- 2006 UC Irvine
- 2005 UC Riverside
- 2004 UC Berkeley
- 2003 Sonoma State University
- 2002 Pomona College
- 2001 Stanford University
- 2000 UC Santa Barbara
- 1999 UC Santa Cruz
- 1998 Long Beach
- 1998 Mills College
- 1974-1998