![Problem Department]()
Problem DepartmentV. Thebault, C. A. Balof, Walter B. Clarke, W. V. Parker, J. Rosenbaum, Arnold Emch, H. T. R. Aude, D. L. MacKay, Eunice Lewis, C. W. Trigg, O. E. Lancaster, Johannes Mahrenholz, Robert C. Yates, I. C. Nichols, Thomas F. Mulcrone, E. P. Starke, G. W. Wishard, Yudell Luke, H. S. Grant, C. N. Mills and Albert Farnell · National Mathematics Magazine · 1939