Lee Stopple, a noted photographer, took this image of Baker and the similar image of Christy Mathewson also in this collection. The clarity and composition of the photos is of exceptional quality and we can get a sense of Stopple from the accolades he annotated on back.
Baker is wielding his back in the requested pose by Stopple in front of the visitor’s dugout. This is his classic pose with upturned collar and holding his massive bat for which he was famous.
The full story of the 1912 Stopple Galveston baseball postcards see here: