I've had some success with the missing songs.

It seems Richard Nardin plays with a group 'Barrowburn'http://www.barrowburn.net/ I emailed him and this was the reply:

Hi Roger,
    Yes I wrote "Song for Phil" a short time after his death in 1976.   It was recorded on an LP of my original songs that I released in 1983.    I don't have
a digital version of it but I was meaning to convert the LP to CD.    I get requests for recordings of some of the songs from time to time.      So I guess I will
have to get it done.    I will send you an mp3 of the song when its ready.

Thanks for your interest,
Richard Nardin

So I'll look forward to that.


Also managed to track down Jack Honig, he has a number of poems on the internet, one of which is the lyrics to 'Tribute to Phil Ochs'.
http://www.poemhunter.com/i/ebooks/pdf/jack_honig_2006_6.pdf

I need to try to contact him now for a recording