http://www.pbs.org/video/the-river-styx-january-1964-december-1965-wayhiw/ http://www.pbs.org/video/the-river-styx-january-1964-decembe... - Tonkin coverage sta

http://www.pbs.org/video/the-river-styx-january-1964-december-1965-wayhiw/ http://www.pbs.org/video/the-river-styx-january-1964-decembe... - Tonkin coverage starts around 18 minutes in, after considerable context being provided.