From the letters column of Lois Lane #77 (1967). Now, it should be noted that this was an 80-Page Giant reprint issue, and the letters, too, were reprints:
So, while this may not have been an actual 1967 letter and response, the editors do say these were the "best" letters, which means they specifically chose and approved this letter and response, so there you go.
Anyhoo, Alex Calenda of Providence, Rhode Island asks:
The reply...and prepare to wince:
Oh, and quite obviously, the Alfred business has been the teensiest bit retconned...