The petition was organized and circulated by Arthur B. Robinson, president of the Oregon Institute of Science and Medicine (described as "a small independent research group") in 1998, and again in 2007. Frederick Seitz, then chairman of the George C. Marshall Institute, wrote a supporting cover letter, signed as "Past President National Academy of Sciences USA, President Emeritus Rockefeller University".Letter from Frederick Seitz Global Warming Petition ProjectGary J. Weisel, "Skeptics, Naysayers, Anomalies, and Controversies" in Climate Change: An Encyclopedia of Science and History (eds. Brian C. Black et al., ABC-CLIO, p. 1241.Oreskes & Conway, p. 245. "In a highly unusual move, the National Academy held a press conference to disclaim the mailing and distance itself from its former president."
