Nelson Rockefeller as administrator of Rockefeller Center in Manhattan, New York. Rockefeller was a Republican who was often considered to be liberal, progressive, or moderate. In an agreement that was termed the Treaty of Fifth Avenue, Rockefeller persuaded then-Vice President Richard Nixon to alter the Republican Party platform just before the 1960 Republican Convention. In his time, liberals in the Republican Party were called "Rockefeller Republicans". As Governor of New York from 1959 to 1973, Rockefeller's achievements included the expansion of the State University of New York, efforts to protect the environment, the construction of the Governor Nelson A. Rockefeller Empire State
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,