'One of the frustrating things about being a historian is the number of times you are told by others that surely everything in your specialty must already have been ‘done’. After so many decades or centuries, what more could there possibly be to discover? One of the answers is that what interests scholars, and what topics are considered worthy of examination, changes over time. This explains how ‘new’ material – often sitting in the archives for centuries – comes to light. It also explains why women have not always made the cut, a problem compounded, as recent Twitter discussions have highlighted, by how often research about women by female scholars still goes unpublished.' (Introduction)