The entire contents of the Princeton Companion are searchable at the Princeton website.  In an entry from 1978, Alexander Leitch memorializes, among other things, that Tarkington

spent his first two years of college at Purdue, his last two at Princeton. He was a founder of the Triangle Club, and editor of the Nassau Literary Magazine, a contributor of humorous drawings and literary wit to The Tiger, and the most popular man in his class. Bliss Perry said he was “the only Princeton man who had ever been known to play poker (with his left hand), write a story for the Nassau Lit (with his right hand), and lead the singing in a crowded room, performing these three acts simultaneously.” These pleasurable activities Tarkington carried on at some expense to his studies, and when his class graduated in 1893 he lacked sufficient credits for a degree.