Sam’s onion field was somewhere on the other side of the lake. Once or twice a week he would row across the lake and pick a new batch to fill the cart. Sam had big strong arms, but it would still take all day for him to row across the lake and another day for him to return. Most of the time he would leave Mary Lou in a shed, which the Walkers let him use at no charge, but sometimes he would take Mary Lou on his boat with him.
Sam claimed that Mary Lou was almost fifty years old, which was, and still is, extraordinarily old for a donkey.
“She eats nothing but raw onions,” Sam would say, holding up a white onion between his dark fingers. “It’s nature’s magic vegetable. If a person ate nothing but raw onions, he could live to be two hundred years old.”
Sam was not much older than twenty, so nobody was quite sure that Mary Lou was really as old as he said she was. How would he know?