The problem about the ages was pointed out by someone else, but I'll give just one example:
After pointing out that there weren't gray mounts in the 1860s and the stereoview necessarily is from after the 1860s, I'm curious how one explains how the man on the left is at least twenty years younger than the man 10+ years later on the right?
The initial post said that it "seems irrefutable" that it is the six Knickerbockers "Walter Avery, Doc Adams, Duncan Curry, Charles De Bost, Fraley Niebuhr, Charles Birney". However, it more than
seems irrefutable, it
is irrefutable that it is not.
As far as the "George Wright" photo goes, it should also be pointed out that their heads aren't even the same shape.