"This was a very well-organized workshop that proved to be extremely useful for me. At the workshop, I had opportunities to hear about the most recent work in the field in informal settings (ranging from blackboard talks to hikes up Aspen Mountain), to engage in highly productive discussions about outstanding questions, to work with collaborators on existing projects, and to start new collaborations."

In Memoriam



More than 200 volunteers, both physicists and members of the Aspen community, have worked tirelessly for the Center and have helped to shape and make possible the ACP's more than 50 years of successful programs. On this page we remember those individuals who have served and are no longer with us.

Lester Anderson, 1921 - 2000: mayor of Eugene, Oregon and former CEO Random Lengths, Inc. General Member, 1988 - 1996; Trustee, 1988 - 1992.

Robert O. Anderson, 1917 - 2007: Chairman of the Board, Aspen Institute for Humanistic Studies and founder of ARCO. Trustee, 1968 - 1981.

Julius Ashkin, 1920 - 1982: particle physicist at Carnegie Mellon University. Trustee, 1968 - 1972.

M. A. B. (Baqi) Beg, 1934 - 1990: theoretical particle physicist at the Rockefeller University. Trustee, 1981 - 1986.

Hans Bethe, 1906 - 2005: theoretical physicist at Cornell. Trustee, 1968 - 1976 and Vice-president, 1972 - 1973.

A. G. W. Cameron, 1925 - 2005: theoretical astrophysicist at Harvard. Trustee. 1972 - 1977.

Peter Carruthers, 1935 - 1997: theoretical particle physicist at Cornell, Los Alamos National Laboratory and University of Arizona. Chairman of the Board, 1979 - 1982 and Trustee, 1975 - 1982.

Martin Block, 1926 - 2016: Founded the Winter Conferences with his wife, Beate. Served an an Honorary Member from 1997 - 2016.

Jessica Catto, 1937 - 2009: journalist and conservationist. General Member, 2000 - 2002.

Sidney Coleman, 1937 - 2007: theoretical particle physicist at Harvard University. Trustee, 1981 - 1987 and 1995 - 2001, and General Member, 1981 - 1987 and 1990 - 1995.

Stirling Colgate, 1925 - 2013: theoretical and experimental astrophysicist at Los Alamos National Laboratory. Trustee, 1972 - 1978, General Member, 1990 - 2004, Honorary General Member, 2004 - 2013.

Robert Craig, 1925 - 2015: co-founder of the Aspen Center for Physics, founder of the Keystone Center. Trustee, 1968 - 1975, Vice President, 1968 - 1972, Honorary Trustee 1975 - 2015.

David De Young, 1940 - 2011: theoretical astrophysicist at Kitt Peak National Observatory. President, 2001 - 2004, Scientific Secretary, 1980 - 1981, Trustee, 1973 - 1981 and 1991 - 2001, and General Member, 1990 - 2006.

Maggie De Wolf, 1929 - 2016: philanthropist, Honorary Member, 1998 - 2016.

Nicholas De Wolf, 1928 - 2006: founder of Teradyne. Trustee, 1983 - 1990 and General Member, 1983 - 2003.

Richard Ferrell, 1926 - 2005: theoretical physicist at the University of Maryland. Trustee, 1968 - 1972.

Daniel Isaac Fivel, 1933 - 2012: theoretical physicist at the University of Maryland. Trustee, 1968 - 1976, Honorary Trustee, 1976 - 2012.

Martin Flug, 1931 - 2015: entrepreneur, businessman and philanthropist. General Member, 1996 - 2015, Trustee 2006 - 2012.

Paula Johnson, 1954 - 2016: Financial Manager of Aspen Center for Physics from 2002 - 2016. Updated Policies and Procedures. Greatly enhanced both the data base and the web site.

Benjamin Lee, 1935 - 1977: theoretical particle physicist at Fermilab. Trustee, 1976 - 1977.

Richard Norton, 1928 - 2008: theoretical particle physicist at UCLA. Trustee, 1986 - 1991 and General Member, 1986 - 1992

Heinz Pagels, 1939 - 1988: theoretical particle physicist at Rockefeller University and NY Academy of Sciences. Treasurer, 1974 -1979, Scientific Secretary, 1973 - 1974 and Trustee, 1972 - 1981.

Joseph Polchinski 1954 - 2018: theoretical physicist at UC Santa Barbara and a member of the Kavli Institute for Theoretical Physics. Scientific Secretary 2003 - 2004 and General Member, 1998 - 2004.

Richard Prange, 1932 - 2008: theoretical condensed matter physicist at University of Maryland. Trustee, 1982 - 1988, and General Member, 1982 - 1988 and 1990 - 1993.

Henry Primakoff, 1914 - 1983: theoretical nuclear physicist at University of Pennsylvania. Trustee, 1968 - 1972.

David Schramm, 1945 - 1997: theoretical astrophysicist at the University of Chicago. Chairman of the Board, 1992 - 1997, Trustee, 1983 - 1990, and General Member, 1983 - 1997.

Frederick Seitz, 1911 - 2008: theoretical condensed matter physicist at University of Illinois Urbana-Champaign and President of the Rockefeller University and National Academy of Sciences. Trustee, 1968 - 1972.

Richard Slansky, 1940 - 1998: theoretical particle physicist at Los Alamos National Laboratory. Scientific Secretary, 1982 - 1983, Trustee, 1982 - 1988 and General Member, 1982 - 1988 and 1990 - 1998.

Joseph Slater, 1922 - 2002: economist and President of the Aspen Institute for Humanistic Studies. Trustee, 1969 - 1982.

Robert Rathbun Wilson, 1914 - 2000: sculptor, accelerator physicist at Cornell, and Director of Fermilab. Chairman of the Board, 1986 - 1989 and Trustee, 1969 - 1975.

Lincoln Wolfenstein, 1923 - 2015: theoretical particle physicist at Carnegie Mellon University. Instrumental in the founding of the Aspen Center for Physics. Trustee, 1968 - 1973, General Member, 1990 - 1999, Honorary Member, 1999 - 2015.

Fredrik Zachariasen, 1931 - 1999: theoretical particle physicist at Caltech. Scientific Secretary, 1979 - 1980 and Trustee, 1976 -1982.