Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. James "Jim" Gilmore (May 1, 1853 - November 18, 1928) was an American professional baseball player who played three games for the Washington Nationals during the 1875 season. He was born in Baltimore, Maryland and died there at the age of 75. Major League Baseball (MLB) is the highest level of professional baseball in the United States and Canada, consisting of teams that play in the National League and the American League. The two leagues merged in 2000 into a single MLB organization led by the Commissioner of Baseball after 100 years as separate legal entities.