Comic Book Apparel

I want to know when the people had shirts with Superman or Batman on them, and other super-hero.

Log-shirts have been around since the 1920s, but got 40 Inthe really popular and radio as the shadow and the Green Hornet ...... tshirts for modern superheroes and things on them, they have been around since the tee shirt has become popular ... I myself have a Superman t shirt when I was 6 years in the early 70s ..... go to the mall store Hot Topic, or three quarters ...... shirt or any other site online.