I know of the series you mean, there was a series of 100 asians and another series of 100 American students. I came across them (if you'll pardon the expression) lurking in the alt binaries newsgroups.
You might enjoy this compiled from the American series, takes a little while to load though
http://jokesland.net.ru/devchata.html
Run your mouse over the one you want to see naked, click on the model for rear view.