Robert L. Heilbroner
National Committee to Abolish the House Un-American Activities Committee
As of May 1964, Prof. R. L. Heilbroner Harvard University, was listed as a sponsor of the Communist Party USA front, National Committee to Abolish the House Un-American Activities Committee.
Political Rights Defense Fund
Socialist Scholars 1997
The conference was themed "Radical alternatives on the eve of the millenium".
Invitees were asked to join Doug Henwood, Robert Heilbroner, Paul Sweezy, Harry Magdoff, Bill Tabb, Frances Fox Piven, Robert Fitch, Jane Slaughter and Ellen Meiksins Wood "as they debate changes in the labor movement, Marxist theory, the state of the economy, market socialism, and other areas where theory and practice meet".
Or "listen to the United States' only independent and socialist congressman", Rep. Bernie Sanders, "dialogue with" Joel Rogers of the New Party and In These Times' ....Salim Muwakkil on independent politics...
"Michael Harrington and Today's Other America"
In 1998, a new film based on late Democratic Socialists of America leader Michael Harrington was released. "Michael Harrington and Today's Other America-Corporate Power and Inequality" featured interviews with Bogdan Denitch, Congressman Bernie Sanders, Frances Fox Piven, John Kenneth Galbraith, Rush Limbaugh, Senate Ted Kennedy, Jim Chapin, Robert Kuttner, Charles Murray, Robert L. Hellbroner, Joanne Barkan, Joseph Murphy and Bob Herbert. 
- Political Rights Defense Fund letter to supporters signed by Syd Stapleton
- Democratic Left, Jan./Feb. 1987, page 17
- Democratic Left, Jan./Feb. 1990, page 12
- [Dem. Left Winter 1998, page 2]