Got these two snapshots from Huggins & Scott last month. Taken July 4th, 1906, Athletics vs. Highlanders at Columbia Park. It was a doubleheader with Rube Waddell beating Jack Chesbro in game 1 and Chief Bender losing to Al Orth (aka The Curveless Wonder) in game 2. Even in the 3x3 snapshots I was fairly sure it was Waddell at the plate---probably talking it over with catcher Schrecengost just before the start of the game---but the scan at high res makes that familiar posture fairly unmistakable. Rube!
The Highlanders player with the flag (at left in the high res crop) is a nice detail as well...
