Although Doran William Cannon received the sole screenplay credit on Brewster McCloud, the finished film was largely reshaped on set: Robert Altman and a cadre of close associates either rewrote material or allowed scenes to be improvised during filming. The tension between an original writer's vision and Altman's notoriously freewheeling method reached a public flashpoint when, after the film's release in December 1970, Cannon took his frustrations to The New York Times in a column that detailed his experience. The column amounted to a rare, public airing of the usual behind‑the‑scenes tug-of-war over authorship in New Hollywood productions — a dispute over control, credit and creative process that left Cannon publicly at odds with the director's improvisational approach and raised uncomfortable questions about how much of an original writer's work survives during Altman's collaborative shoots.
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