Bob Olhsson wrote:
>>From Don Cox: "Acoustic recordings were often made with more than one horn.
> I haven't
> been able to find a picture of this, or to find out how the sounds were
> combined."
> 
> I've never heard of them being combined. The reason one would record that
> way would be to obtain multiple master disks from the same performance. This
> same redundancy was SOP for electrical and magnetic tape master recordings
> and is standard with today's digital gear.

There is a picture in Roland Gelatt's "The Fabulous Phonograph", showing 
Lewis James and Elliot Shaw each in front of their own horn at Victor's 
Camden studios. The caption explains that during a recording session the 
singers would be directing their voices down their own horn; presumably 
there would be another horn to pick up the accompaniment.

Michael Shoshani
Chicago