George Bogatko wrote,  "What, oh collectors of O and G rolls,
is that magic difference?"

In Art Reblitz's Treasures of Mechanical Music, there is a wonderful
article; an interview between P. M. Keast and Art, bringing to light
the arranging and recording facts of Capitol and Columbia Roll Company.

Stephen Kent Goodman

 [ The Keast recollections also appear in Bowers' Encyclopedia
 [ of Automatic Musical Instruments, page 721.  -- Robbie