Once a catcher, but made his mark as a manager. After a stint at the helm of Pittsburgh, he assumed control of the Philadelphia Athletics in 1901 and continued for 50 years until retirement at the age of 88. Mack is best remembered as a dignified, scorecard-waving leader in a business suit, who won five World Series crowns and built two dynasties. ALS, one page, 5.5 x 8.5, Copley Plaza letterhead, April 30, 1938. Letter to Max. In full, “Have written Mr. Harridge. Will hear no doubt from him in the next few days. Am sure he will be delighted to furnish the umpires. Note what you say about the Virginia player - will have Ira see him before long.” Matted and framed with a photo and caption, to an overall size of 17 x 15. In fine condition, with light overall toning and tape residue to three edges, not affecting any of the bold text. Auction LOA Steve Grad/PSA/DNA and R&R COA.