Thanks to the MMD readers who have already responded, we have the
pictures of Auto-Typist pumps that we wanted for our research at
Mechanical Music Press.  Comparison to photos of National Automatic
Music roll-changer pianos (and Welte pipe organs), and Berry-Wood
pianos, it's obvious that none of these brands of pumps were the same.

We're still interested in any original ads from Monarch Tool and
Machine showing that they made any of these pumps.

Art Reblitz
Colorado Springs, Colorado
orchestrion@comcast.net.geentroep [delete ".geentroep" to reply]