O,
Fellows Shank cutter tapers:
#1 morse, with 0.4750" Gage dia, by 1.000" long.
#2 morse, with 0.7000" Gage dia, by 1.500" long.
Fellows Short Taper, 1.0625" Gage dia, by 1.500" long.
Fellows Long Taper, 1.0625" Gage dia, by 2.250" long.
All with appopriate drawbar thread in the ends.
IIRC, Ash gear used to have the data in their catalog and also carried a good selection of adapters.
Cheers,
Winston H.