How Geocaching Works


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  • "Development of a Final Policy on Geocaching in Protected Heritage Areas Managed by Parks Canada". Parks Canada. http://www.pc.gc.ca/docs/pc/poli/interim/geocaching_e.asp
  • Geocache.com http://www.geocache.com
  • Geocacher University http://www.geocacher-u.com
  • Letterboxing.org http://www.letterboxing.org
  • "Reference: GPS Scavenger Hunting," Portsmouth Police Department News Release, February 4, 2007. http://www.cityofportsmouth.com/POLICE/press020407.htm
  • Sloan, Gene. "Philadelphia, other locales 'cache' in." USA Today. May 31, 2007. http://www.usatoday.com/travel/destinations/­2007-05-31-geocaching_N.htm