Some or all of what you want may be found from the first page of the CMAA website. Look for the page of Musical Settings in Latin and then Chants of the Church (1954) Modern Notation.
Caution: My computer had some trouble reading the pages, but all the pages seem to be accessible
If you can't find what you want, let me know. I have one Liber with modern notation, and I can copy some pages for you.
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