A specialist in medieval history, Eileen Edna LePoer Power was Director of Studies in History at Girton College, University of Cambridge from 1913 until 1921, Lecturer in Political Science at the London School of Economics from 1921 until 1924, and Reader of the University of London 1924 until 1931. In 1931 she became the second woman to be appointed to the Chair of Economic History at the London School of Economics (LSE).