Batteries! Nowadays we use batteries in our remote controls and our electric toothbrushes and our Furbys. But there was a Golden Age of batteries, when those tiny tin-covered powerhouses led men of rugged handsomeness and grim determination into a wild landscape of adventure, danger, and giant killer bears? Can you take the heat, bub? Is there enough hair on your chest to demand the 1.5 volts you get in every D cell? Are you man enough to use Ray-O-Vac batteries, ya sissy?
from Detective Comics #156 (February 1950)
from The Adventures of Bob Hope #5 (October-November 1950)
from The Adventures of Bob Hope #3 (June-July 1950)