Comic book pinbacks

  Pb-O1Yt5Eyg Trlwqnux2Ri Aaaaaaabk4Q Cop4Bgqfzwu S1600 22 Bushmiller Society

  Pb-O1Yt5Eyg Trlxfvtrh9I Aaaaaaabk5O Uehxtsa4O3A S1600 11 Spysmasher 1940S

Golden Age Comic Book Stories posted a nice gallery of comix-related pinbacks from the 1930s-1990s. And there are hundreds more to see at Mark Lansdown's Comic Pinback Website, focused on specimens from the 1890s to the 1950s. (via SheWalksSoftly, thanks Stacey Ransom!)