The origins of the game are obscure but have been attributed to a Dartmouth College fraternity party. An Alpha Phi Delta fraternity alumnus, David Thielscher, class of 1954, recalled in an interview for "The Dartmouth" newspaper that beer pong was played when he was an undergraduate. History professor Jere Daniell '55 stated that he played the game as a student, and Bob Shirley '57 stated that he began playing in 1956. Shirley suggests that the game began when spectators rested their cups of beer on a table during a ping-pong game. One of the earliest published photographs depicting a game of pong appeared in Colorado School of Mines' 1961 yearbook "The Prospector". Dartmouth's 1968 yearbook "Aegis" (page 304) also has a published photograph of a game of pong. By 1976, students began publishing articles about the game.