This incident happend in the summer of 1951.
My cousin and I were 14 years old when this incident happened. We were fishing in a pond one day near a neighbor's house. We had been there about thirty minutes when a man and his wife and daughter came up and started fishing. My cousin and I were standing on the opposite bank, directly across from the daughter and her mom. The man had walked down to the other end of the pond. The pond was narrow where we were standing so we were not that far from the mother and daughter. We noticed the daughther, who looked to be about 12 or 13, sat down on the bank and her legs were spread. I don't think she realized my cousin and I were looking up her dress. Naturally, we wanted to get a closer look at her so we slowly waided out into the water with our fishing poles. Finally we were close enough to see her really good and we realized that she did not have panties on. We could see her pussy lips with just a little hair around it that was just starting to grow. I told my cousin that my dick had gotten hard and he said his had also. We were standing in water deep enough that we were covered from the waist down. We decided to jack off. We had on jeans so we unzipped our jeans and took our dicks out and began jacking off under the water as we looked that that magnificant young pussy in front of us. It wasn't long until we both came and soon after we watched our cum float to the top of the water. To be able to look at a girl's pussy and jack off at the same time was a tremendous thrill to two young boys. It was a day that we both still remember and talk about. We often wonder who the girl was because we never saw her again after that day.