The Early Television Foundation website has lots of info about early color, including a database of which companies made what during those days:

http://www.earlytelevision.org/color.html

Phil Nelson

Thanks for the link,I enjoyed reading it.

That mechanical color wheel system sounds interesting,it would be neat to see one in action.

Like this?

http://www.antiqueradios.com/forums/...c.php?t=148413