Well, once again, turns out I MAY be wrong. Dug up literature for the Barton Pump. Turns out I have an operations manual for Barton pumps, dated 08/87, from AMERICAN GODIVA pump company, which is still in business today, I THINK. They must have bought out Barton/American fire Pumps at some point.
Be interesting to be able to get parts for a pump that was initially created in the 1920s!!!
-Michael