PBS ; produced and directed by Riva Freifeld ; written by Ken Chowder ; co-produced by Amy Brown ; a Riva Productions film for American Experience ; WGBH Boston
PBS ; directed by Mark Zwonitzer and Michael Chin ; produced and written by Mark Zwonitzer ; a Hidden Hill Productions film for American Experience ; a production of WGBH Boston
produced and directed by Stanley Nelson ; written by Marcia A. Smith ; a Firelight Media production for American Experience ; WGBH Boston ; WGBH Educational Foundation
a WGBH production in association with the British Broadcasting Corporation for NOVA ; produced & directed by Carl Charlson ; written by David McCullough
written by David Grubin and Geoffrey C. Ward ; produced and directed by David Grubin ; a David Grubin Productions, Inc. film for American Experience in association with PBS