Captain Marvel Adventures #64

This 1946 Fawcett gem sports a wonderfully comedic cover by C. C. Beck, who captures Captain Marvel in his red-and-gold suit looking alarmed as he pleads, "No! No! Lester, you can't DO that!" — directed at something only he seems able to see near his feet, while a baffled, heavyset police officer in the foreground clutches his nightstick and thinks "?!" at the mysterious "BRAACKKKKK" sound effect rippling between them. The story title "Captain Marvel and the Little Man Who Wasn't There" promises a delightfully quirky mystery, and Beck's clean, expressive linework makes the whole scene irresistibly charming.