1996* Elfers, James E. "The Tour to End All Tours", Nebraska: University of Nebraska Press, 2003 ISBN 0-8032-6748-7* Gerasimo, Luisa and Whiteley, Sandra.
1996* Elfers, James E. "The Tour to End All Tours", Nebraska: University of Nebraska Press, 2003 ISBN 0-8032-6748-7* Gerasimo, Luisa and Whiteley, Sandra.