Hello MMD.  I enquired of the music department at Stanford
University, which recently has acquired the entire collection of
rolls and instruments of Denis Condon, a well-known Sydney
collector.  They do indeed have an Aeriol catalog in their library,
and the number of my Charles Delioux Caprice is 4737.  So I am happy
and grateful not only to Stanford, but to all my other respondents.

John Phillips in Hobart, Tasmania.