- About Letterboxing - A short history of letterboxing in Dartmoor and North America.
- Dutch Letterbox Site - Provides information on getting started, codes of conduct, prehistoric Dartmoor and the 100 club.
- Have Feet Will Travel - An introduction and guidelines to finding letterboxes on Dartmoor. Includes details of National Park by-laws and contact details for checking military activity.
- Letterboxing Info Sheet - An explanation of the hobby for printing out and including in your own letterboxes.
- Letterboxing Kids - Includes a map-reading game, photo album, story and instructions for making rubber stamps.