Documentary Educational Resources presents a Films Incorporated presentation ; produced by the Film Study Center of the Peabody Museum of Harvard University ; directed by John Marshall in collaboration with Robert Gardner
Ironbound Films presents ; a film funded by National Science Foundation ; directed by Seth Kramer, Daniel A. Miller, Jeremy Newberger ; written by Daniel A. Miller
a co-production of Blair Brothers Productions and WGBH, Boston ; writer, Lawrence Blair ; directed by Lorne Blair ; Beyond the ring of fire directed by David Fanning ; produced by Lawrence and Lorne Blair