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Problem DepartmentV. Thebault, Walter B. Clarke, E. R. Mann, B. D. Mayo, C. W. Trigg, Robert C. Yates, Alfred Moessner, E. P. Starke, Kirby W. Blain, J. Rosenbaum, R. A. Miller, E. H. Umberger, A. Moessner, T. Mahrenholz, A. C. Briggs, C. E. Springer, R. E. Gains, William E. Byrne, T. Dantzig, Frank Morley, Karleton W. Crain and H. D. Grossman · National Mathematics Magazine · 1937