Authored by: Philip Anderson, Nobel Laureate ; Michael Fisher, Wolf Laureate ; David Gross, Nobel Laureate ; Jorge Hirsch, Professor of Physics ; Leo Kadanoff, National Medal of Science ; Walter Kohn, Nobel Laureate ; Joel Lebowitz, Boltzmann Medalist ; Anthony Leggett, Nobel Laureate ; Eugen Merzbacher, President, American Physical Society, 1990 ; Douglas Osheroff, Nobel Laureate ; Andrew Sessler, President, American Physical Society, 1998 ; George Trilling, President, American Physical Society, 2001 ; Frank Wilczek, Nobel Laureate ; Edward Witten, Fields Medalist

The letter was read in public on April 26, 5:00 PM, at Lafayette Park, across from the White House, and delivery in person to the White House was attempted, however White House staff refused to take delivery. The letter was delivered by certified mail to the White House (Label/Receipt Number: EQ210249212US)
A shorter version of the letter was published in the International Herald Tribune