![Problem Department]()
Problem DepartmentT. A. Bickerstaff, Robert W. Clack, J. T. Fairchild, C. A. Balof, W. R. Volckhausen, J. Rosenbaum, G. W. Wishard, H. T. R. Aude, E. P. Starke, W. V. Parker, Alfred Moessner, Albert Farnell, Michael Wales, Walter B. Clarke, C. W. Trigg, E. M. Shirley, R. B. Thompson, Yudell Luke, M. S. Robertson, V. Thebault and C. E. Springer · National Mathematics Magazine · 1938