Does anyone have a recommended source for small gears for building or
repairing roll frames and other mechanical devices used in mechanical
music devices?

In particular, I have been looking for a good, convenient source for
the complete line from Boston Gear or Martin Gear.  McMaster-Carr has
a limited selection and is easy to do business with, but they don't
cover much of the total required selection.  Most sources don't want
to do business with individuals or in small quantities.

Bob Humes