many decades ago the ymca promoted naturism by NOT allowing boys to wear any clothing on camping trips

I know clothing on boys was prohibited for all swimming from 1926 to 1962 at all public schools and YMCA's. I didn't hear about the camping trips.

I have the swimming part in my nudist post toward the end of it...

https://similarworlds.com/nudity/naturism/4455420-OUT-OF-THE-SHADOWS-The-History-of-American-Nudism