Children play around in pool during their swimming lessons from Gertrude Ederle

Row of children standing on edge of pool, Gertrude Ederle standing on edge of pool at right angle to them, Ederle tells them to jump in and they jump in, then she gets in / row of children standing on edge of pool, Ederle standing on edge of pool at right angle to them, Ederle tells them to jump in and they jump in, then she gets in, children play around in pool / children playing, Ederle holding on to little girl as she swims, then she picks girl up and puts her back in water, Ederle steps out of pool, children continue playing in pool / Note: exact day not known