THE BALLAD OF AIMEE McPHERSON is also printed in 2 more recent songbooks by Jerry Silverman, published by Mel Bay:

A Guitarist's Treasury of Songs (2008)

and

Songs of Fun & Foolishness (1992)

You can see the chords and notation for the melody line in either of them.

There is no songwriter credit on the page where the song appears.

I can't see whether there is an appendix or copyright page that might give credit to sources.