Reillys Standard Motet Book

[don9of11]

Greetings, first time posting.

I am preparing a few historical liturgical music booklets for potential upload to IMSLP, starting with the Standard Motet Book; No. 1032 (S.A.T.B. Volume 1), compiled and arranged by James A. Reilly and published by McLaughlin & Reilly Co. in 1939.

While the core collection and most pieces are safely in the public domain (predating 1928 or unrenewed corporate works from 1939), I've hit a potential snag with a couple of internal items that carry later copyright or arrangement dates:

O Bone Jesu (Palestrina) carries a 1954 copyright claim by McLaughlin & Reilly. (M&R co. 76-4 (1032) (1955))
Cantate Domino & Emitte Spiritum list arrangements by "Nino Borucchia" (copyrighted 1941 and 1940 respectively).

Through archival research, I discovered that "Nino Borucchia" was a pseudonym for Fr. Joseph Toussaint Oliva Portelance (born 1900, died in 1979).

Because IMSLP is strict about individual arrangement and editorial layers, I wanted to ask for your advice: how does the community typically handle anthologies where the core book is old, but a couple of internal arrangements involve mid-century corporate/arranger dates like these? Would you recommend omitting/redacting those specific pages, or is there an established path for checking if those specific 1940s/1950s arrangement copyrights lapsed?

Any guidance you could share would be greatly appreciated!

Also, is there a file size limit for scanned PDF?