Michael,  I believe that the 20-note Peerless rolls are available from
Ed Schmidt. See http://www.actionwebcreations.com/smr/ or contact him
at <eschmidt@crosslink.net>  The 20-note rolls are listed under "Bijou",
which is the same instrument in a case made for the US market.

Todd Augsburger - Roller Organs
http://www.rollerorgans.com/