This site is amazing
http://blog.modernmechanix.com/
Just search for "phonograph" and you'll find tons of old, great, cool, hilarious ads for phonographs, and loads of other things too.
You'll spend hours on this site, without even knowing it
This is a few of my personal favourites
How records are made,
http://blog.modernmechanix.com/2006/10/ ... -are-made/
Phonograph grindstone,
http://blog.modernmechanix.com/2006/07/ ... rindstone/
The smallest phonograph ever,
http://blog.modernmechanix.com/2007/04/ ... honograph/