Hotelling's lemma: an economic rule relating the supply of a good to the profit of the good's producer
In 1938, Samuel Wilks became editor-in-chief of the Annals and recruited a remarkable editorial staff: Fisher, Neyman, Cramér, Hotelling, Egon Pearson, Georges Darmois, Allen T. Craig, Deming, von Mises, H. L. Rietz, and Shewhart.