Thanks. That 2nd and 4th one has my grandfather in it.
He was stationed as a Cadet Airman at Kelly Field in WW1. Flew Jenny's and was about to be deployed over in Europe and the war ended before he was shipped out.
He attended U of Nebraska, played the fiddle (2nd from left, front row) and played "End" (before there was tight end, there was 'end') for the Cornhuskers. He was on the team when they upset Knute Rockne's Fighting Irish in the early 20's.
Lower right--> Grandpa