Came across an interesting book, which Ong seems to have been an outside reader for and recommended for publication:

Carpo, Mario. Architecture in the Age of Printing: Orality, Writing, Typography, and Printed Images in the History of Architectural Theory. Trans. Sarah Benson. MIT Press, 2001.

Among other things, it has many references to memory.

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Some poems from The Enfant Terrible Again: Newly Discovered Notes Edited by Kenneth Hopkins (a limited edition book of poetry written by Kenneth Hopkins who attributes it to S. Butler. The book is signed by Hopkins and was a gift to Fr. Ong):

"Unconscious Memory"

I suppose it is another manifestation of this
when some poet echoes another poet's line by accident.
Rossetti is said to have suppressed a poem because it
contained two lines identical with two by Tennyson
from his latest book, although Rossetti had composed
his poem before Tennyson's was published. This seems
to be another reason why Tennyson would be well
advised to publish less often and less copiously. If
Rossetti could have been encouraged to write more
poetry he might have painted fewer pictures, and with
fewer poems by Tennyson and not so many of Rossetti's
pictures life would be more bearable for us all.

"Proverbial Philosophy"

A stitch in time saves nine, and because the
other eight were unnecessary idle hands were left for
which the Devil had to find employment.