From NKAA, Notable Kentucky African Americans Database (main entry)

Born in Miami, Florida, Kelley became a life-long resident of Paris, KY. Not an African American, he was a veterinarian and writer who did a phenomenal number of interviews with players from the Negro leagues. He is author of They Too Wore Pinstripes, Voices from the Negro Leagues, The Negro Leagues Revisited, and other works, 23 overall, focusing primarily on Negro League baseball, horses, and American history. He  also wrote hundreds of articles and collected a sizable number of autographs from former Negro League players. He died in 2016 at the age of 75. (Obituary)

For more see Cool Papas and Double Duties, by W. F. McNeil. See the variety of baseball and other books he has written in InfoKat and at AbeBooks, Amazon, and other book sites and stores.