Brian,  I had that similar but opposite dilemma only a month ago and so
I took some Wilcox & White (W&W) 58n Symphony and Orchestral rolls down
to Buffalo to compare with a friend's Aeolian Orchestrelle and Grand.
These are the results of that exhaustive ;-) research.

Both of these roll types are perforated 6-to-the-inch, and there the
similarity ends.

Aeolian organ roll paper (116n, too) is  10 1/8" wide and the pin
spindles are 3/16" diameter, as are regular 11 1/4" 65n rolls.  W&W paper
is 10 1/4" wide and spindles are 5/32".  Each machine has incompatible
corresponding left hand drive chucks.  The spindle to spindle length of
both types of rolls is effectively the same at 12".

In addition Wilcox & White organ rolls are spooled 'inside out'.  That
is, the printed words/expression guide side of the paper faces the roll
core after traveling 'right side out' over the trackerbar.

So you can use Aeolian paper on a W&W instrument only if you re-spool on
Angelus/Symphony cores (or completely re-machine the drive chucks :-( )
and re-align the trackerbar, but not as is because of the smaller W&W
spindle diametre.

Conversely though, you can play W&W paper on Aeolian's system if you
contrive slide-on pin enlarging sleeves.  In order to re-spool on
width-adjustable Aeolian cores you may (?) have to trim the paper edges
(as you will in order to use regular 11 1/4" 65n paper).

In the end, if you come to have either 'useless' Angelus/Symphony rolls
or orphaned W&W spool cores I would be most interested to hear from you.

regards,

Dave Kerr