The "Guide to Restoring the Ampico A" has been updated and placed on
my web site.  Visit  http://antiquemechanicalrestorations.com/ and
click on "Restorations" then "Ampico A Restoration."

The guide contains 100 photographs along with text of the mechanism
in progress.  Sections 3 through 7 cover the pump, unit valves,
the stack, the expression mechanism and the drawer.  Much of the
information is useful to those restoring other types of pneumatic
instruments as well.

Paul Manganaro
Coopersburg, Pennsylvania
http://antiquemechanicalrestorations.com/