Fremont Glass Co. - out of Seattle WA (no website but I found some company info)
Good video footage of a smaller shop producing cylinder process sheet glass.
Another video where it's best to just turn the sound off. Great images, but no narration, no live sound, just cheesy music.
video via YouTuber Siuco
Fremont makes some beautiful glass, with rich vibrant colors. I haven't used it so much because I find it a little iffy if you need to refire it, making it limited for use in painting or fire polishing.
Fremont is one of only two shops in the USA making sheet glass by this method. The other is Blenko Glass Co., in West Virginia. Blenko is a bigger shop with slightly different methods. They do have a Making of Blenko video on their website, but it only shows the making of a bowl. Nothing on their flat glass making, but you do get the sense of how much bigger Blenko is and how the team works differently because if it.