Can someone explain what the "Echo Organ" mentioned on this webpage is:

    http://www.maesto.com/US/welteinstruments.html 

It says that the Echo Organ sat at the other end of the hall.  So I
suppose someone would write music for both organs, perhaps bouncing a
tune back and forth between them.  Was this a standard arrangement, and
if it wasn't, then wouldn't someone have had to write special music for
that organ?

I suppose that's how life went, if you were as wealthy as the family
who installed the Welte.  Nowadays they'd spend the money on sports 
cars or something.

Mark Kinsler
Lancaster, Ohio
http://www.mkinsler.com