Presentations:

• 2005.  "Summary Patterns of Population Redistribution in Pennsylvania 1990-2000." (poster).  At the Annual Spring Meeting of the Delaware Valley Geographical Association, Fort Washington, PA.
  

• 2004.  "Trends in Racial Segregation in the Commonwealth of Pennsylvania: Revisited, Revised, and Extended." At the Annual Meeting of the Pennsylvania Geographical Society, Harrisburg, PA.
  

• 2004.  "Patterns of Persistent Extraordinary Segregation in Pennsylvania: 1990-2000." (poster). At the Annual Autumn Meeting of the Delaware Valley Geographical Association in West Chester, PA.
  

Publications

• 2007.  (with T. Victor Mesev).  "Measuring and mapping conflict-related deaths and segregation: lessons from the Belfast ‘troubles,’" chapter 5 in Geospatial Technologies and Homeland Security: Research frontiers and future challenges. Available August 2008.
  

• 2005.  "Trends in Racial Segregation in the Commonwealth of Pennsylvania: Revisited, Revised, and Extended." Proceedings of the Pennsylvania Geographical Society Annual Meeting , Volume XII.

• 1999. (with Richard A. Crooker). “Elements of Physical Geography Online,” interactive Internet workbook for Elements of Physical Geography by Gabler, et al., Saunders College Publishing. 

• 1998. "Trends in Racial Segregation in the Commonwealth of Pennsylvania: 1980-1990," The Pennsylvania Geographer XXXVI (1): 24-38.

• 2007. Brochure map for Rosedale Grove Association, Inc., Reading, PA.
  

• 2002. Fifteen maps for Birds of the Lehigh Valley and Vicinity, by P.G. Saenger, B.C. Malt, and K.F. Crilley.  Lehigh Valley Audubon Society, Emmaus, Pennsylvania.

• 2001. Four maps for the Allentown Art Museum.  The maps are to show school children the origins of paintings in an exhibit on Dutch, German, and Italian artists.