Question: Does Bill Duke or Robert J. Flaherty have more credits for documentary films?
Sentence (from "Robert J. Flaherty"): Robert Joseph Flaherty, FRGS ( ; February 16, 1884 – July 23, 1951) was an American filmmaker who directed and produced the first commercially successful feature-length documentary film, "Nanook of the North" (1922).
Relevant evidence: Yes