The Sad Story of the Philadelphia Phillies' First Black Ballplayer, John Kennedy - Sports Illustrated Inside The Phillies
Mets Analysis: Getting to Know David Robertson - Amazin' Avenue
Philadelphia Phillies, History & Notable Players
John Herrnstein – Society for American Baseball Research
Philadelphia Phillies, History & Notable Players
World Series: Astros, Phillies rosters' without US-born Black players
Not a Single Black Player': No US-Born Black Players on World Series Rosters
Lorenzen, Buxton, Hernández, Cueto out for Wild Card Series; Correa, Siri, Bush on rosters
Jackie Robinson - Wikipedia
Philadelphia Phillies - Wikipedia
The story of John Kennedy, the Phillies' forgotten first black player
Tokyo Olympics Baseball Rosters Will Not Include 40-Man Players — College Baseball, MLB Draft, Prospects - Baseball America
Dodgers left to sift through wreckage of another postseason failure – Orange County Register
Phillies' injured first baseman Rhys Hoskins remains a long shot to make postseason roster