What’s a New Yorker to do when the air conditioner breaks down? How on Earth is anyone supposed to get to sleep? Take some tips from 1910, where sleeping in the heat was the norm. Air conditioners didn’t really become common in public spaces for another ten years.

Advice from the article: eat in moderation and avoid alcohol and cigarettes before bed; try to keep a worry-free mind; avoid meat but enjoy fruits and berries. And if your bedroom is too hot, you can always try sleeping in one of the locations pictured: a rooftop, a pier, a park, or a fire escape.

One photo is labeled “an open-air bedroom.” This downtown brownstone takes that concept literally.

HOW TO GET SLEEP ON HOT SUMMER NIGHTS: Advice from Well Known Physicians and Specialists Which Will Make the Sizzling Season Easier to Bear (PDF)

From June 26, 1910