According to "Superheroes Unmasked" which ran on the History Channel last night, in the late 1930's through the 1940's, LONG before the Silver-Age (1956-69), Superman's adventures were read by over 11 million people DAILY in serial form and with the advent of Action Comics the book sold well over 1 MILLION issues a month.
Once again proving how well MOTA can speak out of his ass about things of which he has virtually NO CLUE.