“Portraying Place Through Ceramics: A Collaborative Experience of a Cartographer and an Artist.” Paper presented at “Art and Cartography – Cartography and Art Symposium sponsored by the International Cartographic Association, Vienna University of Technology, and Academy of Fine Arts Vienna, Vienna, Austria, 2 February 2008.  “Domain: Collaborating with Clay and Cartography.” Poster presented and ceramic tile exhibited at Geography and the Humanities Symposium, Charlottesville, VA, 23 June 2007. “Map Art: Contesting Space and Preserving Place.” Paper presented at Association of American Geographers 102nd Annual Meeting, San Francisco, CA, 21 April 2007.  “Creating Works of Art with Maps: A Collaborative Exploration by a Geographer and Artist.” Paper presented at Association of American Geographers 102nd Annual Meeting, Chicago, IL, 9 March 2006. "Utility of Popular Education to Improve Primary Care Utilization: A Case Study from Chilimarca, Bolivia.” Poster presented at the 11th International Medical Geography Symposium, Fort Worth, Texas, 7 July 2005. “Utility of Popular Education in Community Development: A Case Study from Chilimarca, Bolivia.” Paper presented at the Association of American Geographers 101st Annual Meeting, Denver, Colorado, 8 April 2005. “Accessibility and Utilization of Health Care.” Paper presented at the 11th International Congress of Latin Americanist Geographers, Antigua, Guatemala, 18 May 2004. “Identifying Marginalized Populations in Boone County Missouri with GIS.”  Paper presented at the Association of American Geographers 100th Annual Meeting, Philadelphia, Pennsylvania, 15 March 2004.

"Medical Geography in the Classroom: Health Services Provision in Latin America.” Paper presented at the Association of American Geographers 99th Annual Meeting, New Orleans, Louisiana, 6 March 2003.

“Locating Medically Underserved Geriatric Patients Using Geographic Information Systems.” Paper presented jointly with Erik J. Lindbloom, Ambar Bajpai, and Bernard G. Ewigman at the Society of Teachers of Family Medicine 35th Annual Spring Conference, San Francisco, California, 27 April 2002.

“Using GIS to Evaluate Health Care Provision to Medically Underserved Population Areas.” Paper presented with Cheryl Morton at the Association of American Geographers 98th Annual Meeting, Los Angles, California, 20 March 2002.

“Mapping Brain Cancer: Communicating to Diverse Stakeholders in a Controversial Case.” Paper presented at the Association of American Geographers 97th Annual Meeting, New York City, New York, 28 February 2001.

“Integrating GIS with Dispersion Software to Determine the Equity and Risk of Air Pollution in East St. Louis, Illinois.” Paper presented jointly with Brian Welde and Timothy Haithcoat at the 1999 Environmental Systems Research Institute (ESRI) User Conference, San Diego, California, 26 July 1999.

“Community Health Assessment: A Case Study from Boone County, Missouri.” Poster presented at the Association of American Geographers 95th Annual Meeting, Honolulu, Hawaii, 24 March 1999.

“GIS and Community Assessment.” Paper presented jointly with Andrew Hunter at the 4th Annual State of Missouri Geographic Information Systems Conference, Columbia, Missouri, 17 March 1999.

“Diabetes Among African Americans in Missouri.” Paper presented at the West Lakes Division of the Association of American Geographers 49th Annual Meeting and Wisconsin Geographical Society 52nd Annual Meeting, Madison, Wisconsin, 30 October 1998.

“Experienced Place and Accessibility to Health Services in Chilimarca, Bolivia.” Paper presented at the 8th International Symposium in Medical Geography, Baltimore, Maryland, 15 July 1998.

"Difficulties in Assessing Accessibility by Health Providers." Paper presented at the Association of American Geographers 94th Annual Meeting, Boston, Massachusetts, 28 March 1998.

"Evaluating Equity in Health Delivery with Maps." Poster presented at the 125th Annual Meeting and Exposition of the American Public Health Association, Indianapolis, Indiana, 12 November 1997.

"Providing Basic Needs in Peri-Urban Communities: A Case Study from Chilimarca, Bolivia." Paper presented at the 6th International Congress of Latin Americanist Geographers, Arequipa, Perú, 21 July 1997.

"Mapping Utilization Patterns of a Primary Health Care Facility in Chilimarca, Bolivia." Poster presented at the International Symposium on Computer Mapping in Epidemiology and Environmental Health, Tampa, Florida, 13 February 1995.

"County-Level Health Mapping in Latin America: The Availability and Quality of Data." Paper presented jointly with Connie H. Weil and Robert B. McMaster at the International Symposium on Computer Mapping in Epidemiology and Environmental Health, Tampa, Florida, 13 February 1995