Which year did Mario del Monaco record the set of Italian songs under the title 'Un amore cosi' grande'? It sounds to me it was rather late, probably well into the 70s.
It was actually later than that - the album was released in August 1998, on EMI Records, and is available on CD and cassette through your local record dealer.
2 cbs-lps were made - the first in 75, the second followed (i think) ca. 78 - complete reissue on 2 cds available at duckrecord.com !
greetings from vienna
herbert