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More Great Links
Sources
- Atlas Quest
http://www.atlasquest.com - Granstrom, Chris. "They live and breathe letterboxing." Smithsonian, Vol. 29 Issue 1, 1998.
- Letterboxing North America
http://www.letterboxing.org - Letterboxing 101
http://www.letterboxing.org/GettingStarted/Letterboxing101.pdf - Letterboxing.Info
http://www.letterboxing.info
