Palgrave, the first Deputy Keeper of the Public Record Office (PRO), had met Green, was impressed with her scholarship, especially her knowledge of languages, and recommended her to his superior John Romilly, the Master of the Rolls. Romilly was continuing Lord Langdale's work of overseeing the establishment of a national archive (the PRO), and publishing some of the documents it held. Numerous state papers which had been assembled from different locations were studied and summarised, and then the abstracts were arranged in chronological order in the form of "calendars".