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I am hoping that board members can assist with the identification of this postcard. Based on the stamp box on back, dates to 1904-18. The image of several ballplayers inside a fancy vehicle is reminiscent of season ending championship team photos such as the 1910's Boston Red Sox, etc. Even under magnification, there is no discernable team name/logo on either the uniforms nor hats.

Does anyone recognize this specific image or can identify any individual players or possibly the team/year? Any assistance would be greatly appreciated.