| Ryan\'s_Letterboxes Personal page with clues for boxes placed throughout the western United States, as well as a few in Canada, Africa, and Central America. Also includes tips for improving the stamp quality. |
| Silent_Doug\'s_Letterboxing_Site Articles including getting started, outdoor ethics, and explanation of cryptic letterboxer codes. Also includes list of boxes found and clues for boxes placed in the northeastern region of the United |
| Silver_Eagle\'s_Letterbox_Aerie Clues to nearly 100 letterboxes that Silver Eagle has placed in North America, primarily in Texas. |
| The_Space_Traveler Family offers clues for Pennsylvania, New York and other states. |
| Stamp-in-the-Box A collection of information and clues relating to letterboxing, a hobby that combines hiking, art, orienteering and mystery in a treasure-hunt style activity. |
| Twograysquirrels_Letterboxes Clues to letterboxes placed by twograysquirrels, mostly in Maryland and Virginia. |
| Urban_Letterboxing Database of clues to letterboxes in urban locations, primarily in Europe. |
| Wanda_and_Pete\'s_Letterboxes Clues for boxes placed primarily in Rhode Island, but a few in other states as well. Also includes logs of the movement of hitchhiker boxes, primarily in New England. |
| What_is_Letterboxing? Michelle Spalding offers a history of letterboxing in England and the United States with bibliography. |
| Yahoo!_Groups__Letterboxing_Northeast Discussion group for the northeastern US. |
| Yahoo!_Groups__Letterboxing_USA Discussion group for US letterboxers. |
| NPR___Letterboxing Radio host Linda Wertheimer and Thomas Johnston, an enthusiast in Washington, D.C., find a letterbox near the White House. [audio] (April 10, 2004) |
| The_Gazette__Letterboxing_a_Hobby_of_Inky_Fingers_and_Hidden_Treasures Article on local letterboxing from chain of community newspapers near Washington, DC. (July 9, 2003) |
| Washington_Post__Thinking_Inside_the_Box Article by Caroline Kettlewell describes her discovery of the activity. (July 12, 2002) |
| Fox_News__Letterboxing_Makes_Hiking_an_Adventure Feature story datelined Oakland, New Jersey. (June 14, 2002) |
| They_Live_and_Breathe_Letterboxing Abstract of an article by Chris Granstrom, with link to a few references. (April 1, 1998) |
| Adirondack_Sports_&_Fitness An outdoor recreation and fitness magazine covering the Adirondack and Capital-Saratoga regions of New York State. |
| Adventure_Network Articles on camping, climbing, paddling, and outdoor travel plus links to books and training articles. |
| Adventure_Sports_Journal Print magazine covers kayaking, climbing, surfing, and biking in the San Francisco Bay area. Includes sample photos and articles and subscription information. |
| AdventureGuide Guide to international adventures, and ecotour destinations and activities. |
| American_Field_Guide Over 1400 video clips enable you to experience America's wilderness firsthand. |
| Arizona_Outdoorsman_Magazine Information and articles on Arizona hunting, fishing, boating and archery. |
| Avalanche_-_Outdoor_Sports_Online Includes articles, polls, videos, photos and links about mountain biking, kayaking and snowboarding. |
| Backwoods_Bound Family outdoor web site, produces the "Backwoods Bound Bullet". |
| Boundary_Waters_Canoe Information on camping, canoeing, kayaking hiking and dogsledding. Subjects of general interest though focus is on Boundary Waters Canoe Area Wilderness in Ely Minnesota. |
| Canyons_Worldwide Explores, documents and publishes information on canyons worldwide, with emphasis on Mexico's Copper Canyon, the Yarlung Tsangpo in Tibet, and canyons in Australia, Greece, Bolivia, China and the USA. |
| Cyberwest Online magazine about hiking, mountain biking, skiing and exploring. Covers Western United States and Alaska. |
| Dallas_Outdoors Outdoor recreation in North Texas: with articles on fishing, hunting, camping, canoeing, lakes and state parks. |
| Dennis_Anderson Archives of outdoor columns for the Minneapolis - Saint Paul Star Tribune. |
| DesertUSA_-_Magazine A travel and recreation guide to the American Southwest and southern California. |
| Discover_The_Outdoors Hunting,fishing,camping and shooting sports. |
| EcoFlorida_Magazine__Your_Guide_to_Exploring_Natural_Florida Florida ecotourism magazine with articles, photos and news about ecotours, camping, wildlife and travel to natural areas. |
| Environmental_News_Network_(ENN) Environmental education and awareness e-zine with daily updates. |
| Explore Canadian outdoor adventure magazine. Features forum, gear questions, and selected articles from the print version. |
| Fun_Pig_Magazine This irreverent literary magazine encourages outdoor enthusiasts to simply get out and have fun. |
| Gary_Howey\'s_Outdoorsmen_Adventures Longtime publisher of hunting and fishing resources for the Midwest, with The Outdoorsmen Newspaper, videos and TV programs. |
| Gray\'s_Sporting_Journal Print and online magazine about hunting and fishing for outdoorsmen. |
| Great_Outdoors Experience the outdoors online -- hiking, skiing, camping, and mountain biking with gear reviews and adventure profiles. |
| Gulf_Coast_Outdoors_Magazine The monthly publication on hunting and fishing with Weekend Outlooks, a fishing forecast for coastal areas around Alabama, Mississippi, and Florida. |
| hikerwriter_outdoor_magazine An on-line magazine about backpacking, hiking, and adventure travel. Contains info about destinations, gear, outdoor reading and women's issues. |