Brett and Penny's Letterboxing Page  
   List of their boxes found, planted, and exchanges made; primarily in Oregon and the Pacific Northwest.
   http://home.agalis.net/bcostley/Letterbox/

British Columbia Letterboxes  
   Introduction, photographs of personal stamps, and clues for boxes planted in southwest British Columbia.
   http://www.ajaster.com/letterboxing/

Buckaroo's Letterboxing  
   Clues for boxes she planted in Washington and Massachusetts.
   http://sophia.smith.edu/~rlay/letterboxing.htm

Catbead Mischief  
   Offering clues for letterboxes in the Syracuse, New York area.
   http://www.catbeadmischief.com/

Chowder's Southern California Letterboxes  
   Search for Chowder's Letterboxes in Long Beach, San Bernardino and Lake Arrowhead, California.
   http://home.earthlink.net/~letterboxes

Chuck's Letterboxing  
   Chuck and Molly's letterboxes in Connecticut.
   http://www.chuckstraub.com/Letterboxing/connecticut_letterboxes.htm

Dutch Letterbox Site  
   Personal page describing the Dartmoor 100 Club, clues for personal boxes in the Dartmoor area, and some photographs. [English and Dutch]
   http://home.wanadoo.nl/letterboxing/

DVN2R CKR's Letterboxes  
   Letterboxing forum with clues and discussion topics on letterboxing. Includes helpful hints on methods and supplies.
   http://www.leecomputers.com/letterboxing/

Fish and Chips' Letterboxing Paradise  
   Virtual letterbox created by two avid letterboxers. Includes an explanation of virtual letterboxes.
   http://www.geocities.com/imacoldplaya/index.htm

Fleur de Lis' Letterboxing Journal  
   Fleur de Lis' weblog about his letterboxing hobby.
   http://fleurdelislb.blogspot.com/

Fudrick's Letterboxing Travails  
   Clues to letterboxes he has placed, mostly in the Northwest US.
   http://www.geocities.com/fudrickus/index.html

Letterboxes placed by The Catbird and Lizard  
   Clues for boxes placed in Washington.
   http://www.thecatbird.com/seat/letterboxing/

Letterboxing in Salem, Massachusetts  
   Letterboxing: Some letterboxes in Salem, Massachusetts.
   http://www.aisling.net/lb/MA/salem.htm

Letterboxing Northeast  
   Articles on eraser art, photographs of people and places, links, and a lengthy list of clues for boxes placed by the Drew family primarily in New England states, but also Washington, DC, South Carolina, and Colorado.
   http://hometown.aol.com/drewclan/

Letterboxing on Holcomb Farm  
   Clues to the three letterboxes hidden on Holcomb Farm.
   http://www.holcombfarm.com/LB_letterboxing.htm

Letterboxing with Mark & Sue  
   Mark & Sue Pepe hail from Kensington, CT USA. After finding their intial box in June 2002, they have found letterboxes in 11 states and placed boxes in 2 states & Aruba.
   http://markandsuepepe.blogspot.com/

Letterboxing with MommaFox and Bald Eagle  
   Clues to letterboxes they have placed in Connecticut, Massachusetts and Vermont.
   http://www.geocities.com/mommafox@snet.net/index.html

Letterboxing with the SpaceTraveler  
   Letterbox clues for Pennsylvania, New York and other locations.
   http://www.enter.net/~space/Pages/Letterboxchart.html

Louise's Letterboxing Questionnaire  
   She is a final-year student at Aberystwyth University carrying out research into letterboxing for her dissertation. If you would visit her site and complete a short questionnaire it would be most appreciated.
   http://homepage.ntlworld.com/chris.donovan10/

Mark Sheehan's Letterboxing Page  
   Personal letterboxing experiences along with background information on the hobby.
   http://www.members.tripod.com/~mcsheehan/letterbox/letterbx.html

Massachusetts Letterboxes  
   Clues for letterboxes hidden by Bonnie and Betsey in Massachusetts.
   http://users.crocker.com/~bsennott/letterbox.html

Mirkwood's Letterboxing Site  
   Clues to letterboxes placed by the author throughout Michigan, plus images of the stamps she created for them.
   http://www.ruthannzaroff.com/letterboxing/

NeeDeep's State Stamp Series Letterboxes  
   NeeDeep's state stamp series of letterboxes.
   http://statestamp.blogspot.com/

Oklahoma City Letterboxes by Dennis Williams  
   Clues to letterboxes placed by Dennis in Oklahoma City between 1998 and 2001 with link to a page with letterboxes placed in New Mexico.
   http://david.snu.edu/~dwilliam.fs/geog1113/okcboxes.htm

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.
   http://www.geocities.com/rscarpen/Lb/

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 New York and Pennsylvania.
   http://www.letterboxing.info/

Silver Eagle's Letterbox Aerie  
   Clues to nearly 100 letterboxes that Silver Eagle has placed in North America, primarily in Texas.
   http://www.geocities.com/sileagle1/index.html

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.
   http://www.confessionsofdecember.com/lbna/index.asp

Twograysquirrels Letterboxes  
   Clues to letterboxes placed by twograysquirrels, mostly in Maryland and Virginia.
   http://hometown.aol.com/twograysquirrels/index.html

Urban Letterboxing  
   Database of clues to letterboxes in urban locations, primarily in Europe.
   http://spacehijackers.co.uk/letterboxing/

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.
   http://alum.wpi.edu/~p_miner/Letterboxes.html

What is Letterboxing  
   Description and history of letterboxing in England and the United States with a few reference sources.
   http://www.gigagraphica.com/Michelle/letrbox.html

Nebraska Letterboxing  
   Information about letterboxing in and around Nebraska. Includes clues and logs for local letterboxes, as well as some resources for letterboxing in general.
   http://interbug.com/letterboxing