The Donaldsons and the Dunnes at Lattingtown beach, August 1964.
Alma (Hendrickson) Donaldson on the left, with 5-year old Brian (who was called Scotty at the time) in front of her. Ten-year old Ken is to the left and behind Mrs. Dunne, and 12-year old GCD is right-rear.
As explained by Timothy Dunne (13-Jan-2017): "That is Lattingtown beach for sure. That is my sister Cindy sitting on the left, Pat behind her in the rear, my Mom [Carol] in the center and my sister Corin on the right. "