It's an article in the New York Times, the Sunday Style section,
today, 15 January 2023.

The feature article profiles a live weekly dance event in Ann Arbor, Michigan. It has been going for fifty years, since the 1970's; and it's the same group of people, who just keep getting older. Their ages range from 65 to 90 years. There are a bunch of color photographs.

I can't link to the article from the computer I'm using; I saw the article because I read a paper copy today.

It's worth noting that the venue has changed many times over the past 50 years. Also the scheduling has altered along with the age of the participants. Now, the event begins at 6:30 PM and ends at 9 PM, so the senior citizens can go home and go to bed. The people who work at the venue are very fond of this crowd. Only, on occasion, somebody needs to have an ambulance called.