Richard Rockefeller of the United States Advisory Board of Doctors Without Borders from 1989 until 2010, and served on the board of Rockefeller University in New York City until 2006. In the last few years of his life, Rockefeller was working to establish better worldwide methods of treatment for individuals suffering from post-traumatic stress disorder. Rockefeller was the founder and former chairman of Hour Exchange Portland, a service credit barter in Portland and throughout the state of Maine. He also served as chairman of the board of Maine Coast Heritage Trust from 2000 to 2006. Rockefeller served as president of the Rockefeller
Laurance Rockefeller the advance of urban sprawl. In September 1991, he was awarded the Congressional Gold Medal for contributions to conservation and historic preservation. Awarded by President George H. W. Bush, it was the first time in the Medal's history (since 1777) that it had been awarded for outdoor issues, effectively naming Rockefeller as "Mr Conservation", who more than any other American had put this issue on the public agenda. Rockefeller said at the award presentation that nothing was more important to him than "the creation of a conservation ethic in America". In 1992 Rockefeller and his wife Mary donated their Woodstock,