Jonas Mekas, filmmaker, poet, cofounder of Film Comment and the New America Cinema Group, and founder of Anthology Film Archives; Ken Jacobs, filmmaker, distinguished professor of cinema, S.U.N.Y. Binghampton, and founder of the Millenium Film Workshop; and M. M. Serra, filmmaker and executive director, Film-Makers' Cooperative. Fifty years ago, more than two dozen filmmakers wrote the manifesto of the New American Cinema Group/Film-Makers' Cooperative—a communal, collaborative organization founded on the principles of "self-sufficiency and free expression through the art of cinema." In celebration of the organization's formal incorporation on July 14, 1961, the National Gallery presented a series of five programs of films from the Co-op's impressive catalogue and hosted filmmakers Jonas Mekas, Ken Jacobs, and executive director M. M. Serra in July 2011.