Here’s an article on the Notes for Notes Benefit Concert that Don performed at on December 6th, 2013:

http://www.noozhawk.com/article/jeff...ncert_20131211

This is the part that mentions him:
Then there was another big surprise — unbilled Eagles guitarist Don Felder graced the audience with a cover of Stevie Ray Vaughan's "Pride and Joy" and one of the all-time great rock songs, "Hotel California," which Felder co-wrote. Hearing Felder's solo at the end of the latter song, which many like me can sing along to virtually note for note, was almost a religious experience.