A hundred years ago, Eveready ran this ad in the June 1924 issue of Boys’ Life, stressing the fun and utility that a flashlight and good batteries would bring.

Shown is their model 2671, which was said to have a 200 foot range.

According to the ad, you need one for gathering firewood after dark, exploring, or signaling. You also needed one for fun nights around the house. Chances are, there was an old flashlight around the house. If so, you could reload it with a fresh set of Eveready batteries.

One helpful hint was to know what size batteries your flashlight took. Then, you could buy a new set without bringing in the flashlight.