The following is from the PNC Flight West web site:

We have received news with the passing of retired Delta pilot Captain Ronald Arthur Oeschler, age 80.  Captain Oeschler joined Delta Air Lines 04-01-1963 and was Houston based.  We understand Captain Oeschler succumbed to complications due to lymphoma and a recent fall, but we have no other information.  I’ve not been able to locate an online obituary or funeral home memorial guestbook.