Ken Burns presents ; a film by Barak Goodman ; directed by Chris Durrance and Barak Goodman ; a production of Florentine Films, Laura Ziskin Pictures and WETA Washington, D.C. in association with Ark Media
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 Frontline production with the Palfreman Film Group in association with Kate McMahon Productions LLC ; written by Jon Palfreman ; produced and directed by Jon Palfreman and Kate McMahon
an HHMI Tangled Bank Studios production in association with RCSR Productions LLC ; producer & director, Rob Whittlesey ; consulting writer, Eleanor Grant
produced by Dan Edge, Sasha Joelle Achilli ; directed by Dan Edge ; Frontline executive producer, David Fanning ; a Frontline production with Mongoose Pictures and Quicksilver Media in association with the BBC ; WBGH Educational Foundation