National Trust for Historic Preservation
Washington, D.C.
Board of Advisors, 1973-1981;
Administrative Committee, 1976-1979, 1980-1981;
Advisor Emeritus, 1988-2019.

State of Texas National Register Board of Review
1979-1982.

Texas Historic Resource Center (A & M)
Board of Advisors, 1987-1990

The Summerlee Commission (on Texas History)
Member, c. 1987-1992.

Museum of African American Life and Culture
Board, 1987-1995; Building Committee, 1989-1994; Executive Com., 1990-1994.

Harvard University Alumni Association
Elected Director, 1991-1994; Harvard University Alumni Awards Committee, 1992-1995.

Thanksgiving Square Foundation
Board of Directors, 1991-1998.