You notice there's a camp counselor atop the tower who looks like she is watching intently all the swimmers or non-swimmers as a life guard.
Wonder if she will climb back down the tall tower ladder or slide down the water slide in the front into the water?
And, there's a second person, further out on the left, also atop a smaller tower who is life guarding the outer swim area.
Today, this same lake spot is most likely out front a waterfront, single family house. The 1960's were the good old days when there were many different summer camps just like this one, Camp Kehonka, 1902-1985.
www.kehonka.wordpress.com/camp-kehonka-photos/