History of sport

Midwest Skiing: A Glance Back

John Pontti i Kenneth Luostari

Colonial Downs and More

Francis Marion Bush

Baseball Research Journal (BRJ), Volume 49 #2

Society for American Baseball Research (SABR)

El Juego Que El CAM Jugaba...: Origines del Futbol Americano...

Salvador Larios Paerez i Salvador Larios Perez