Might find http://www.warbirdregistry.org/c123registry/c123registry.html useful and the FAA (http://registry.faa.gov/aircraftinquiry/acftinqSQL.asp?striptxt=C123&mfrtxt;=Fairchild&cmndfind.x;=0&cmndfind.y;=0&cmndfind;=submit&modeltxt;=C-123 lists 15 still registered although they are not all active.