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
Rockefeller Center assistant, Lucienne Bloch.) Rivera's fresco in the Center was replaced with a larger mural by the Catalan artist Josep Maria Sert, titled "American Progress", depicting a vast allegorical scene of men constructing modern America. Containing figures of Abraham Lincoln, Mahatma Gandhi, and Ralph Waldo Emerson, it wraps around the west wall of 30 Rockefeller Plaza's Grand Lobby. In its earliest years, Rockefeller Center received largely negative and pessimistic reviews from architectural critics. The most cynical opinion came from renowned architectural scholar Lewis Mumford, who so hated the "weakly conceived, reckless, romantic chaos" of the March 1931 plans for Rockefeller Center