[prewinter]

Revisiting the identification of Billy Alvord in the front row, instead proposing he is the player on the far right in the middle row. Here are all three players now in play (all at the far right in the three rows), plus comps for Van Dyke and Alvord. The photos of Alvord are from the 1888 season, one from an Old Judge card and the other from a composite of the 1888 club. The hair seems a better match for the player from the front row, IMO. Alvord is listed as 5' 10".

I still think Van Dyke is the player in the back row. - After review, probably not Van Dyke.

9/30/2021 The consensus is that Van Dyke is the player in the front row, Alvord is the player in the middle row, and John Campbell is the player in the back row.