I need a drawing of the player action box in a National Calliope.
This is a 2-tier design, for 53 notes. I can find nothing on the Web.

Removing the box is hard, as all the tubing would have to come off
to get it out of the calliope. It only moves about 3/4 of an inch;
many notes do not work. I think this is now owned by Gulbrandson.

Pete McFall