Letterboxing is an intriguing “treasure hunt” style outdoor activity. Letterboxers hide small, weatherproof boxes in publicly-accessible places (like parks) and post clues to finding the box online on one of several Web sites. However, clues to finding some of the most highly-sought boxes are passed around by word of mouth.

There are about 60,000 active letterboxes listed on LbNA alone. Individual letterboxes usually contain a log book, an often hand-carved rubber stamp and occasionally contain an ink pad. Finders make an imprint of the letterbox’s stamp on their personal log book, and leave an imprint of their personal stamp on the letterbox’s logbook.

1. Libraries Rock!-visit Niagara Falls Public Library Niagara Falls, NY
2. Wisconsin's 250 Years of History: The Quest for Ensign Tom's Legacy Eagle, WI
3. Mythology & Folklore Galore: Greek Sphinx Brookfield, WI
4. Juanita's Café 1944 Los Angeles, CA
5. Miniature Girl Scouts Kansas City, MO
6. Jarabek Trek San Diego, CA
7. Bless My Sausage Weimar, TX
8. Libraries Rock!-visit Webster Pubic Library Webster, NY

More new letterboxes

1. Native Symbols Series Spicewood, TX (5/8)
2. Shutterbug's Desert Music Oro Valley, AZ (2/3)
3. Damon’s 1937 Glendale, CA
4. 7 Cs of Arizona Oro Valley, AZ (7/7)
5. Viola Head ???, NJ
6. TPL Thomaston, CT
7. Swiss Carpenter Tucson, AZ
8. Spawn of Swamp Thing Belcoville, NJ
9. Holly Hills Alloway, NJ
10. NORMS 1957 West Hollywood, CA
11. Casa Grande Ruins Monument Webbox Coolidge, AZ
12. State Quarters Series: Arizona Chandler, AZ

You should make sure to take ink pads or brush markers with you when you set out to find a letterbox. Most letterboxes do not contain an inkpad because if water leaks in, it’s a real mess!