Michael Field was known to late-Victorian readers as a superb poet and playwright - until Robert Browning let slip Field's secret identity: in fact, "Michael Field" was a pseudonym for Katharine Bradley (1846–1914) and Edith Cooper (1862–1913), who were lovers, a devoted couple, and aunt and niece. For thirty years, they kept a joint diary titled Works and Days that eventually reached almost 10,000 pages. This is the first critical edition of selections from this remarkable unpublished work.