Unicorn Stencil presents ; in association with The Missouri History Museum ; directed by Chad Freidrichs ; produced by Chad Freidrichs, Jaime Freidrichs, Paul Fehler, Brian Woodman ; script by Chad & Jaime Freidrichs
a presentation of U.S. Department of the Interior, National Park Service ; an Aperture Films, Ltd. production ; directed by Joshua Colover ; produced by Joshua Colover, Joseph Erb ; written by Shane Smith
Frontline PBS and The Associated Press present ; a film by Mstyslav Chernov ; filmed, written and directed by Mstyslav Chernov ; produced by Mstyslav Chernov, Michelle Mizner, Raney Aronson-Rath and Derl McCrudden