Amazon International Rainforest Reserve (AIRR)
- A non-profit organization set up exclusively to buy land in the Amazon and protect it with forest rangers for the purpose of preserving the rainforest. Site includes articles, kids' section, and description of ways to help.
- http://www.amazonrainforest.org/

Fundacion de Tierra Preservada (Foundation of Preserved Land)
- Non-profit, tax-exempt organization promoting the preservation of land in Costa Rica and elsewhere in Latin America, using donated funds, corporate sponsorship, and volunteers. Information in English and Spanish.
- http://www.tierrapreservada.org/

Creating Land Trusts: Help Conserve Our Land and Natural Resources
- General information about the history and organization of land trust organizations. Includes links.
- http://www.possibility.com/LandTrust/