an ArtMattan Productions release ; Periscope Productions and BBC, ZDF, Arte, IKON, VRT, RTBF, YLE, and in association with History Television, SBS Television, and Danmarks Radio ; produced by Paul Pauwels, Nick Fraser, Olaf Grunert, Wessel van der Hammen, Philippe Van Meerbeck, Bill Binnemans, and Iikka Vehkalahti ; written and directed by Peter Bate
produced and directed by Stanley Nelson ; written by Marcia A. Smith ; a Firelight Media production for American Experience ; WGBH Boston ; WGBH Educational Foundation
a Maya Vision production in association with the BBC and PBS ; written and presented by Michael Wood ; directed by David Wallace ; produced by Rebecca Dobbs