History of the Negro Leagues in KC, Part One - Royals Review
After Jackie Robinson, MLB integration was halting - The Washington Post
Baseball's 100 Most Important People, by John Thorn
The Glorious Return of Hinchliffe, Yankee Stadium of the Negro Leagues
Frank Robinson: Baseball player who struck out racism to become the major league's first black manager, The Independent
The Real Story of Baseball's Integration That You Won't See in 42 - The Atlantic
Frank Robinson, MLB's First Black Manager and Hall of Famer Dies at 83 – Los Angeles Sentinel
Frank Robinson, baseball icon and civil rights activist – The Observer
Jackie Robinson; First African American Major League Baseball Player, News
Frank Robinson, Hall of Famer and baseball's first black manager, dies at 83
Baseball - Integration, Jackie Robinson, MLB