BTW, if we are talking about early Ruth "cards", there is also a 1914 Baltimore News team "card" that features Ruth. The only one that I am aware of sold at REA in 2007. Here's the link:
https://www.robertedwardauctions.com...ing-babe-ruth/
As I recall shortly after the sale there was an extensive discussion on this forum as to the definition of a baseball card and whether this team photograph qualifies. Regardless how one characterizes it, as is the case with the 1915 team postcard featuring Ruth, it is a great early image of him.