There are several references in both Presto-Monthly and Music Trades
Review to an exclusive recording contract between United States Music
Co. and Axel Christensen, and to a series of instructional rolls
Christensen recorded for US Music.  US Music apparently sent Christensen
on an extensive tour to promote the rolls he'd recorded. (Christensen
had earlier made hand-played rolls for QRS.)

I'm intrigued by this series of instructional rolls.  Has anyone run
across any of them, or the set?  Does anyone know much of anything
about them, such as how many there were, their content, etc.?

Bryan Cather
St. Louis, Missouri

 [ In the biography at http://ragpiano.com/comps/chrstnsn.shtml :
 [ "In 1923 he signed a contract with the United States Music
 [ Company to record piano rolls of his own works, as well as
 [ instruction rolls of the Christensen system."  -- Robbie