Sorry to hear of his passing. All posters have been concentrating on his early recordings. His later solo recordings in the past few years were great. Yes his voice was certainly showing its age, but the sensitive production made the most of it, & I don't think you'll find a better version of "Who Knows Where The Time Goes" than his. Another great song from his later recordings is "I Wanna Die Young at a Very Old Age", I'm gonna play that one right now.
The best of his later albums in my opinion, "The Longest Train" which includes both of the above mentioned songs.