Melodian help

[BSimon999@AOL.COM]

A prospective customer called the other day, asking that I repair the bellows 
of an antique melodian. I was recommended to them because I used to do a lot 
of player piano rebuilding.

I do not think I have ever seen a Melodian, and would like any information 
about how difficult it would be for a player technician to rebuild/recover 
the main bellows. ( customer's diagnosis) 

Anyone know anything about these instruments, or might have worked on them?  

This is a keyboard instrument, apparently with reeds,  at which someone sits 
and pumps pedals for vacuum /or pressure, NOT the hand operated 
accordian-like instrument. 

Thank you for any information.

Bill Simon
Phoenix