Salesman (1969 movie)

Salesman is a 1969 cinema verite documentary film which follows four salesmen of expensive Bibles door-to-door in a low-income neighborhood which can't afford expensive Bibles. It was directed by brothers Albert[?] and David Maysles[?], and Charlotte Zwerin[?]. The film has been deemed "culturally significant" by the United States Library of Congress and selected for preservation in the National Film Registry.

The Salesman official website (http://www.mayslesfilms.com/film_saleman)