Jackie Robinson's Signing Caused a Financial Dispute - The New York Times

LEADING OFF: Jackie Robinson Day, Red Sox go for 10th in row

Jackie Robinson in 1945: Signing with the Dodgers – Society for American Baseball Research

Jackie Robinson and Dodgertown, a Haven of Tolerance

This Date in Baseball - Branch Rickey announced signing of Jackie Robinson by the Brooklyn Dodgers, Baseball

Crossing the Color Barrier: Jackie Robinson and the Men Who Integrated Major League Baseball - LA84 Foundation

Remembering Jackie Robinson's Passion - The New York Times

Jackie Robinson's Signing Caused a Financial Dispute - The New York Times

Dodgers' Mookie Betts ready to return to Boston for first time since trade – Orange County Register

From Baseball Icon to Crusading Columnist: How Jackie Robinson Used His Column in the African-American Press to Continue His Fight for Civil Rights in Sports: Journalism History: Vol 46, No 3

Jackie Robinson and Civil Rights: From 1947 Until His Death – Society for American Baseball Research