Pro baseball began in Cincinnati in 1869

History of the Cincinnati Reds - Wikipedia

1869 Red Stockings: Who were the first professional baseball team?

Season-long tribute planned to pioneering 1869 Red Stockings

Baseball of the Bygone Days, by Jimmy Wood, Part 3, by John Thorn

The First-Ever Major League Baseball Team, by Cooper Irvin

On This Date in Sports March 15, 1869: Going Professional

Trips by the 1869 Cincinnati team made the game famous

Cincinnati Reds - Today in Reds history, 1869: The Red Stockings defeat the New York Mutuals 17-8 to finish their first professional season 57-0.

1869 Red Stockings: Who were the first professional baseball team?