This octavo (for SATB voices) of Jacques Arcadelt's "Ave Maria" was in a file entitled, "RP scores, work on." There are notes penciled in on the margins. He edited the piece by making some text adjustments and a few note changes. It is unclear if this edited version is something that could be or has been published. There is another arrangement of this song by Proulx (for SAB choir) in another file (#504).

For SATB Voices and Organ with Optional Strings. Attributed to Luigi Cherubini, Arr. by Richard Proulx. Text: Anonymous. 5 instrumental parts: Violin I, Violin II, Viola, Cello, Bass. Recorded on "Catholic Latin Classics," CD-486/CS-486.