All-Star Comics #17

Wonder Woman informs the JSA that all the minutes of past meetings have been stolen. The scene then shifts back to the moment the Brain Wave jumped from his tower, supposedly to his death. He survived and invented a way using electricity and special substance to shrink the JSA to 8\" tall! Meanwhile, Wonder Woman heads home to look for the minutes and after she leaves, the members find themselves shrunk to 8\" in height, and Brain Wave enters, imprisoning each member in a cage. When Brain Wave leaves the room, Hawkman calls his hawks, who come and take the members away as Brain Wave watches.