Cimarron Music was the most recent publisher of this piece (I believe they took over the old Whaling catalog some time ago). Sadly, Cimarron is currently in limbo--the details can be found here:
http://www.cimarronmusic.com/
Unless you can find a distributor who has a copy around, you may have to wait awhile. Sorry to bear bad tidings...
Richard Perry
University of Southern Mississippi