Did Babe Ruth hit any home runs after age thirty-five? - Quora
Babe Ruth - Wikipedia
The Accurate RBI Record of Babe Ruth – Society for American Baseball Research
October 9, 1921: Injured Babe Ruth wallops his first World Series home run – Society for American Baseball Research
Why didn't baseball players hit many home runs per season before Babe Ruth? - Quora
Babe Ruth: Career retrospective
Babe Ruth 1923 Year Vintage Sports Photos for sale
Babe Ruth Career Highlights - This Day In Baseball
A guide to Babe Ruth's baseball cards, PWCC Marketplace - PWCC Definitive Guides
Record Price for Classic Ruth Photo from 1920
Type 1 photos used for baseball cards