Leadsled / XXX
ATX may have been operated by Antique Airways but not owned by them. As best I can guess AA own their a/c and operate still to this day from YRED.
The Beech 18 is over in WA somewhere. The only way to own one of these babies is to have a huge pile of cash and not a lot of need to keep it, even better if said pile of cash is like the Tim Tam packet