ID YOU REALIZE the CMAA has scanned and uploaded the Solesmes 1949 ANTIPHONALE ROMANUM? It appears to be an edition from 1960, because it contains—at the very back of the book—the feast of St. Joseph the Worker (©1960) and the Queenship of Mary (©1956):
This book is quite useful. For instance, I used a text found on page 366 to create this SATB Hymn for Lent:
Notice how beautiful the typesetting is:
For the record, Watershed in 2008 placed many versions of the Antiphonale online—but not the 1949 edition. Later on, we scanned and uploaded the 1934 Antiphonale Monasticum.