In regard to the question about the QRS 50's factory tour picturing
J. Lawrence Cook making a roll, the show was "You Asked for It."
Max Kortlander, who I believe was owner at that time, took viewers on
a tour of the piano roll making process.  Don Barton of Barton Player
Pianos in Minneapolis, used to have access to a very worn copy of this
segment and he would show it at his annual Customer Appreciation Day.

Randy Hammond