Pietrusza, D. (1991). Major leagues: The formation, sometimes absorption, and mostly inevitable demise of 18 professional baseball organizations, 1871 to present. Jefferson, N.C.: McFarland & Co..

Pietrusza, David. Major Leagues: The Formation, Sometimes Absorption, and Mostly Inevitable Demise of 18 Professional Baseball Organizations, 1871 to Present. Jefferson, N.C.: McFarland & Co., 1991.

Pietrusza, David. Major Leagues: The Formation, Sometimes Absorption, and Mostly Inevitable Demise of 18 Professional Baseball Organizations, 1871 to Present. Jefferson, N.C.: McFarland & Co., 1991.