This isn’t going to help until I can get to my mother’s house later this morning.
But she collected hymnals of various denominations, and I contibuted to it a copy of the Armed Forces Hymnal that would have been in use in 1977. I, um, “liberated” it when I was discharged that year. It has Salve Regina in it. I think most of the music included in that book, as in other hymnals, had listings for composers, author/translators and such.
if someone hasn’t come back with your info later this morning I’ll snag the book and look it up.