John Nichols

This Picture was taken at the Steward Studio in Granite Falls, Minnesota. I have also posted a picture of a Burt Nichols that I think was John Nichols brother. the picture of Burt was taken in the same studio in Granite Falls, Minnesota. Does anyone know anything about this Nichols family? From cenuses in Flora, Renville CO.,Minnesota that shows from 1870 to 1885 Burt lived there and that Burt was born abt. 1833 in New York. Don't now much about this family. help!
People in photo include: John Nichols