We may have an answer to the mystery: Vicki Arnold and Morgan Ames may be one and the same person. First she was Vicki Arnold, now she's Morgan Ames.

I found this link to the January - June 1965 Catalog of Copyright Entries (one year later than the link I posted previously), and on page 164 it has:

***********************************

THE FAR SIDE OF THE HILL; w & m Morgan Ames (a/k/a/ Vicki Arnold) NM: "new music, chord changes, revised lyric." © Caravelle Music Pub. Co., Inc.; 30Mar65; EU873808.

***********************************

This may finally answer the question.


Jay