I'm a few days late on this, but Andy Park did a fantastic job
transcribing "At a Georgia Camp Meeting" and it's fantastic to hear
the arrangement as originally intended, although even in the video
it sounds very good.  It's also a very lively arrangement, and being
a very big fan of Wurlitzer's music, I was really excited to hear this!

What I have to point out though is the stark similarities between the
music that I've heard from the Tonophone and other, later A.P.P and
PianOrchestra music.  What immediately came to mind is "Switchback Rag"
by Harry Auracher, both the A.P.P and PianOrchestra arrangements.  The
triplet arpeggios in the songs are one of the biggest similarities in
style.  Here's a recording of it on my 'Virtual PianOrchestra' playing
a roll scan:  https://soundcloud.com/mikey-mills/virtual-wurlitzer-6 

It's likely that the arranger who did the early Tonophone arrangements
'stuck around' at least until the late 'teens.  Just something I thought
I'd point out.

Mikey Mills