Courtesy of the University of Bucknell

Courtesy of the University of Bucknell

July 1944, courtesy of the University of Bucknell

August 9, 1944 appeal (part 1), courtesy of the University of Bucknell

Appeal (continued), courtesy of the University of Bucknell

J.J. Singh's proposed solution (part 1), courtesy of the University of Bucknell

Singh's solution (part 2), courtesy of the University of Bucknell