In 1962, the University of Toronto Press published Marshall McLuhan's The Gutenberg Galaxy: The Making of Typographic Man, which Ong told us in the spring of 1966 in a course I took from him to read with a grain of salt. Ong never tired of praising his former teacher.
In 1963, Harvard University Press published Eric A. Havelock's very accessible classic study of the Homeric oral mentality.
Ong never tired of referring to Lord's and Havelock's books.
In 1964, Ong delivered the Terry Lectures at Yale University, which were published as The Presence of the Word: Some Prolegomena for Cultural and Religious History (Yale University Press, 1967).
In the fall of 1964, I took my first upper-division English course from Ong at SLU, Practical Criticism: Poetry. In the spring of 1966, I took Practical Criticism: Prose from him.