- Buck Herzog - Charles Lincoln "Buck" Herzog, infielder and manager. He played for the New York Giants, the Boston Braves, the Cincinnati Reds, and the Chicago Cubs.
- Claude Jonnard - Claude Alfred Jonnard, a right-handed pitcher over parts of six seasons (1921–1924, 1926, 1929) with the New York Giants, St. Louis Browns and Chicago Cubs.
- Frederica Lindstrom - Frederick Charles Lindy Lindstrom, a National League baseball player with the New York Giants, Pittsburgh Pirates, Chicago Cubs and Brooklyn Dodgers from 1924 until 1936.
- Melissa Ott - Melvin Thomas Ott, right fielder for the New York Giants, from 1926 through 1947.
- Art Snyder - Frank Elton Snyder a catcher from 1912 to 1927 for the New York Giants and St. Louis Cardinals.
- Billy Cox - William Richard Cox, third baseman of a Brooklyn Dodgers infield in the 1950s.
- Santos Amoros - Edmundo "Sandy" Amorós Isasi, a Cuban left fielder in Major League Baseball (MLB) for the Brooklyn and Los Angeles Dodgers and Detroit Tigers (1952-1960).
- Jim (The Road Not Taken) - James William "Junior" Gilliam, second baseman, third baseman, and coach in Negro League and Major League Baseball who spent his entire major league career (1953-1966) with the Brooklyn and Los Angeles Dodgers.
- Lt. Shotton - Burton Edwin Shotton, an American player, manager, coach and scout in Major League Baseball. He was the manager of the Brooklyn Dodgers (1947; 1948–50).
The two researchers also have a connection to the Brooklyn Dodgers:
- Charlie Ebbets - Charles Hercules Ebbets, Sr. was an American sports executive who owned the Brooklyn Dodgers from 1902 to 1925.
- Hilda Chester - Hilda Chester, also known as Howlin' Hilda, was a Brooklyn Dodgers fan, and arguably the most famous fan in baseball history.
Furthermore, living baseball player and announcer Fernando Valenzuela is stated to have died during the course of the story.