The University of Toronto Presidents Report for 1952 records an address by McLuhan that year given at Hart House:

With singular timeliness, one of the two Library Evenings arranged by the [Library] Committee had [as] its speaker Professor H. M. McLuhan of St. Michael’s College whose subject was ‘The End of the Gutenberg Press Era’.

It may be that the word ‘Press’ here is a typo and that the address was actually titled ‘The End of the Gutenberg Era’. This was McLuhan’s working title for The Gutenberg Galaxy until shortly before its publication ten years later in 1962.¹