Sandwiched in between 1968's Monterey Pop and 1970s Gimme Shelter was documentary filmmaking brothers Albert and David Maysles' groundbreaking 1969 look at door-to-door salesmen in America, About Salesman. With themes covered previously in the fictional Death of a Salesman and later in Glengarry Glen Ross, the Maysles' film attempts to unflinchingly present a window into the harsh realities of the life of the American salesman by following around several door-to-door Bible peddlers. While a handful of participants are featured, the main focus is on Paul Brennan, an aging salesman who, after a successful career, has begun to suspect that he's lost his gift for selling expensive Bibles to his lower-class customers. ~ Matthew Tobey, All Movie Guide