BBB Comix of the Week
The Bogus-Boggess Blog (BBB) features a comic (cover, daily, panels) each Wednesday. Back when Superman comics were 10 cents an issue, each had at least one page dedicated to "interesting" items the reader could order. There were X-Ray glasses, magic tricks and, as in this one, lots of offers to teach one to "throw your voice" (Paul Winchell and Jerry Mahoney were big back then).
But the stunning ad here is the Superman costume complete with mask - "put on the concealing mask and in seconds you are Superman".
Mask?