a production of KTCA-TV ; producer/director, Emily Goldberg ; writers, Phillip L. Berman, Emily Goldberg ; co-executive producer, Phillip L. Berman ; executive producer, Catherine Allan
a film by Brett Morgen ; a National Geographic Studios production in association with Public Road Productions ; National Geographic Documentary Films presents ; produced by Brett Morgen, Bryan Burk, James Smith, Tony Gerber ; written and directed by Brett Morgen