This postcard of Lake Superior was postmarked July 25, 1947 — 70 years ago today.

Someone named Hazel sent this message to Mrs. Dan N. Scarpe (if the penmanship reads correctly) of Oklahoma City:

Hi Folks! Doesn’t it look cool? We’re enjoying the cool air. Went up to Two Harbors today, hiked a lot. Am having a good rest. Regards to all.