NPR : Letterboxing
Radio host Linda Wertheimer and Thomas Johnston, an enthusiast in Washington, D.C., find a letterbox near the White House. [audio]
Perfect Circle Letterboxing Guild
Family and friends offer clues to letterboxes in New Jersey and Pennsylvania.
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 …
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 Penns…
Silver Eagle's Letterbox Aerie
Clues to nearly 100 letterboxes that Silver Eagle has placed in North America, primarily in Texas.
Twograysquirrels Letterboxes
Clues to letterboxes placed by twograysquirrels, mostly in Maryland and Virginia.
Showing 21–28 of 28 results