Posted by Lew on April 15, 2003 at 13:22:44:
In Reply to: Help identify baritone/euphonium posted by jkpete on April 15, 2003 at 12:42:25:
Here's a link to a good article describing the differences between a baritone and euphonium.
Adolph Schmidt may be a little harder to identify. The New Langwill Index identifies an Adolph Schmidt only to say that an early 20th century sousaphone with that marking was reported.