2C1Forest is a major Canadian-U.S. collaborative of 50 conservation organizations, researchers, and foundations working to conserve and restore the forests and natural heritage of the Northern Appalachian Acadian ecoregion. From their website: Use and reproduction of this data is authorized for educational or other non-commercial purposes without prior permission from the copyright holders. You may make as many copies of the data as you wish, give exact copies of the original data to anyone, and distribute the data in its unmodified form via electronic means. There is no charge for any of the above. You are specifically prohibited from charging, or requesting donation, for any such copies (however made), from publishing, and/or from distributing the data with other products (commercial or otherwise) without prior written permission.