'Archives are the meat and drink of the historian. The pursuit through the archives can be tedious and exhausting: ‘Turn every page’, LBJ biographer Robert Caro exhorts. But it is also thrilling – the intense emotion of finding the lock of hair from a long-dead lover or the torn-up shreds of the letters of a discarded husband; or the ‘a-hah’ moment when a scribbled note provides the final piece of a jigsaw you have been carefully putting together.' (Introduction)