From the SEPTEMBER - OCTOBER, 1954 issue of CAECILIA.

Clearly, the Gregorian Psalm Tone, Mode IV, was a favorite! A very brief biography of Paul Cross is found the the Passionist Order's website. https://passionistarchives.org/biography/father-justin-mulcahy-c-p-st-paul-of-the-cross-province-1894-1981/

WITH CHRIST by Paul Cross; for Unison Voices and Organ Accompaniment; 2 Pages) Cat. No. 2016; Price 8 Cts. To the text of the Chinese poet John Wu, Paul Cross has added a 4th Mode melody similar to that of his familiar "Mary the Dawn". The style of the composer will be recognized in the shape of the melody, the balance of the phrases and the responsorial character of verses.

An exceptionaly fine recording is located on this page
https://www.catholicdevotionalhymns.com/recordings/2023-church-of-the-advent/

The wiki page for John Ching Hsiung Wu makes for interesting reading. https://en.wikipedia.org/wiki/John_Ching_Hsiung_Wu

As a footnote, the text for "Mary the Dawn," was not original! An earlier version is found in a hymnal of the (heretical) Liberal Catholic Church!