Seven players are mentioned as having autographed the baseball: Babe Ruth (playing career: 1914-1935) Lou Gehrig (1923-1939) Lefty Grove (1925-1941) Augie Gahlan (1934-1949) Kiki Kuyler (1921-1938) Bill Dickey (1928-1943) Grover Cleveland Alexander (1911-1930)
Larry shows that he is left-handed when he throws the ball and signs the baseball.
When Wally is talking to Beaver in the hallway outside of the den the painting on the wall over his left shoulder is a print of the 1770 oil painting "Blue Boy" by Thomas Gainsborough.