Standard Golden Age U.S. (aproximate) to Standard Modern Age U.S. (approximate)
An advertising strip along the bottom of most pages promotes the Superman radio show. On page 1 of the first story: "Listen to 7HO for SUPERMAN at 5.45p.m. every Mon., Tues., Wed., Thurs." Referenced radio stations are 7HO, 3AW and 7EX.