Enough determination, and you can see anyone naked

First, every single one of the many thousands of photographs was fed into a shredder, and then each of the shreds was fed to the flames, thereby insuring that not a single intact or recognizable image of the nude Yale students -- some of whom had gone on to assume positions of importance in government and society -- would survive.

It was the Bonfire of the Best and the Brightest, and the assumption was that the last embarrassing reminders of a peculiar practice, which masqueraded as science and now looked like a kind of kinky voodoo ritual, had gone up in smoke. The assumption was wrong. Thousands upon thousands of photos from Yale and other elite schools survive to this day.