Some months into the Great War, LCA
agreed with Duff Cooper
that they would both keep diaries: he bought her a leather-bound, gilt-edged, lockable volume bearing her initials to contain her diary entries.
LCA
's personal Diaries 1915-1918, kept during the First World War, which had remained unpublished during her lifetime, appeared posthumously in print with a foreword by the novelist L. P. Hartley
.