Do you have the HD Digital version of Darby O' Gil from Amazon ? I know you also are a fan of the movie and waiting for a Bluray release like myself. I don't think it going to Ever get a release. It's $17.99 on Amazon. I have the Old DVD in Full Screen. I bought Disney's Kidnapped 1960 from Amazon a few days ago. It looks Excellent !
Maybe this will help. I understand that the University of Wisconsin has all years and episodes of The Defenders. I don't know if that can help us. We of course are only interested in Seasons, 2, 3, and 4.