About.com Geography: http://geography.about.com/education/geography/msub76.htm
Excite Maps - mapping, driving directions: http://maps.excite.com/view/?mapurl=/countries/united_states
Geographic Names Information System: http://mapping.usgs.gov/www/gnis/
GeoMapping, a Mapping Portal: http://www.geomapping.com/
MapQuest - Driving Directions, Travel Guide, etc.: http://www.mapquest.com/
Penn DOT Maps: http://www.dot.state.pa.us/bpr/bprinternet/carto/disclaimer-pdf.htm
Public Records Databases: http://www.pac-info.com/
State College and Centre Region Custom Maps: http://www.purplelizard.com/
Travel Library - with Round-the-World-FAQ: http://www.travel-library.com
US Census Bureau Acronyms and Abbreviations: http://www.census.gov/cgi-bin/main/allacro.pl
World Atlas by Country: http://www.graphicmaps.com/aatlas/world.htm
World Map Search: http://www.travel.com.hk/search/maps.htm