Thanks to Mark Forer, Matthew Caulfield and Eric Stott for their help
identifying more tune titles:

Tune 1: The Jolly Coppersmith / 1881, Carl Peter
Tune 3: Sand Dunes (My Desert Rose) / 1918, Byron Gay
Tune 6: Blue Rose -- Waltz / 1917, Frederick Knight Logan
Tune 12: Indianola / 1917, S. R. Henry & D. Onivas

Hear the tunes at the MMD Sounds site, at
http://www.mmdigest.com/Gallery/Sounds/A/unknown1.html 

Robbie Rhodes, MMDigest