a Nova/WGBH production ; produced by Matthew Barrett, John Rubin, and Sarah Holt ; written by John Rubin ; directed by John Rubin, Rushmore Denooyer, Serena Davies, and Sarah Holt
American Experience Films presents ; written by Mark Zwonitzer ; produced and directed by Jamila Wignot ; an Apograph Productions Inc. film for American experience
a production of Scott Free Productions and Lone Wolf Media ; writers, David Zabel, Walon Green [and] Jason Richman ; producer, David A. Rosemont ; directors, Stephen Cragg, Laura Innes [and] Alex Zakrzewski
a co-production of JTN Productions and Thirteen ; in association with NDR and WNET.org ; produced and directed by Mike Dewitt ; written by Mike Dewitt, Daniel Jonah Goldhagen
a Frontline co-production with RAINmedia, Inc. ; a production of WGBH/Boston ; written and produced by Martin Smith and Marcela Gaviria ; co-produced by Will Cohen