Sam Pathy is a public librarian and member of the Society for American Baseball Research. He has contributed to the Baseball Research Journal and has spent the past twenty-five years researching the history of Wrigley Field.

John Thorn is the official historian of Major League Baseball. Apart from his creation, with Pete Palmer, of Total Baseball, he is often visible on ESPN, MLBTV, the History Channel, and other television outlets as a sports authority and commentator. He was also a major on-screen presence in and chief consultant to Ken Burns’s 18 ½-hour PBS film Baseball. Thorn co-wrote The Hidden Game of Baseball and has written several other books on baseball, including Treasures of the Baseball Hall of Fame, The Game for All America, and Baseball in the Garden of Eden: A Secret History of the Early Game.