Original letter signees:

Mairead Maguire, Peace, 1976
Philip W. Anderson, Physics, 1977
Robert Woodrow Wilson, Physics, 1978
Sheldon Glashow, Physics, 1979
Adolfo Perez Esquivel, Peace, 1980
Roald Hoffmann, Chemistry, 1981
Dudley R. Herschbach, Chemistry, 1986
John C. Polanyi, Chemistry, 1986
Rigoberta Menchu Tum, Peace, 1992
Sir Richard J. Roberts, Medicine, 1993
Jose Ramos-Horta, Peace, 1996
Sir John E. Walker, Chemistry, 1997
Jody Williams, Peace, 1997
Louis J. Ignarro, Medicine, 1998
J. M. Coetzee, Literature, 2003
Shirin Ebadi, Peace, 2003
Finn E. Kydland, Economics, 2004
Elfriede Jelinek, Literature, 2004
Frank Wilczek, Physics, 2004
Roger D. Kornberg, Chemistry, 2006
Leymah Roberta Gbowee, Peace, 2011
Tawakkul Karman, Peace, 2011
Alice Munro, Literature, 2013
William E. Moerner, Chemistry, 2014
Kailash Satyarthi, Peace, 2014
Barry Clark Barish, Physics, 2017
Joachim Frank, Chemistry, 2017
George P. Smith, Chemistry, 2018
Michel Mayor, Physics, 2019

Those who replied NO to the original letter:

Hamilton O. Smith, Medicine, 1978
Thomas R. Cech, Chemistry, 1989
Eric R. Kandel, Medicine, 2000
Anthony J. Leggett, Physics, 2003
Robert J. Aumann, Economics, 2005
Eric S. Maskin, Economics, 2007
Andre Geim, Physics, 2010
Jean-Pierre Sauvage, Chemistry, 2016
James Peebles, Physics, 2019