1920's lifeguard. Looks American to me, not sure on the hat, military? I like the fact he looks very tanned! Not sure they had sun cream/protection back in the day. I see the rope in the water to prevent people from going too far out to sea. They still do that in some Yorkshire coastal beaches.
Princeton students after a freshman vs. sophomores snowball fight in 1893. Was this taken as evidence that the fight took place against the students wishes? looks like that's the case. I have seen happier people in my time that's for sure. It must have been some snowball fight, boxes suffer less facial damage than these three students. The velvet looking clothes look rather fetching too..