The identification of Cartwright in this image is at least controversial. Articles seriously challenging this identification can be found in Society of American Baseball Research (SABR) newsletters at "Just Another Misidentified Baseball Photo?". Society of American Baseball Research. October 2011. Retrieved August 16, 2012. and at " So, are there any Knickerbockers in that 1840s half-plate daguerreotype?". Society of American Baseball Research. March 2012. Retrieved August 16, 2012.