He has directed two films that have been selected for the National Film Registry by the Library of Congress as being "culturally, historically or aesthetically" significant: Bob Dylan: Dont Look Back (1967) and Monterey Pop (1968).
Taught a documentary film workshop class at Yale University.
Studied engineering at Yale University.
Noted for his Cinéma vérité style of documentary film making.
Had an electronics firm and worked in advertising before starting as a writer and director of experimental films.