Watercress Sandwiches

I am not certain I ever dined on watercress during my childhood in Mississippi. I do recall that when I graduated from the University of Mississippi in the early 1940s, my family came to pick me up and drive me home. We passed a gushing falls called Big Springs, and the cold water was alive with tall, healthy sprigs of watercress. We gathered it by bunches and carried it back home, and never having heard of cream of watercress soup or other uses for the peppery green, we converted it into s