Hi I just found this footage from recently.
Hope it's not to "homey" it's from a library 'series' up in down Maine' as we say around here.
Mike is certainly one of the best singer/songwriters that you've never heard of . (i take my lessons from him)
Very prolific, he isn't on harp here. Both in their 70's he's 75 I think in better shape than most.
The song isn't preachy or anything certainly an observation of things from someone who cannot see.
The song starts at about one minute in case you don't want to listen to the intro...
but if you hang in there it's a fine song
Hope you enjoy