Pre-War Japanese Baseball Cards
Baseball and WWII Wright Museum of World War II
Baseball and the Civil War: Forging America's National Pastime
Japan's High School Baseball Tournament is the Sound of Summer
A History of Japanese Baseball: From Pre-War to Post-War
Baseball, Battles, & Bereavement: Japanese Baseball Stories from WWII
A History of Japanese Baseball: From Pre-War to Post-War
Baseball Goes to War - Warfare History Network
Japanese Baseball Cards: My Oldest Sports Card
Japan baseball history