I was new in the player piano world and heard about Doyle in the
early 1970's through a friend.  My intention was to make my piano into
a 'player' using pistons to operate the action.  Doyle supplied me
with a roll frame, governor and air motor, all made by Gulbransen.
Then I used the valves he designed.,

He was always jovial and would help you beyond the normal limits of
business.  I came to know him well whilst he was in Vancouver and
thereafter.  In 1978 or so he left for the USA, and around that time
asked me to stand in for him at a Musical Box Society convention in
Seattle as he could not make it.  I gave a 'workshop' on my then-new
perforator and making rolls.

In the middle 1970's, Doyle took all his music machines and displayed
them at the Pacific National Exhibition -- a huge undertaking, and to
'work' for the two weeks there would be very demanding.

It is sad to hear of his passing and I could hardly believe it.  Yes,
Doyle will be missed greatly.

Stephen Bentley
Vancouver, British Columbia, Canada