The most important series of official correspondence is the Papal Letters, calendared from 1198 to 1404 in 4 vols.
Many of his letters, articles, injunctions &c., are calendared in the published volumes of the "State Paper" series of the reign of Elizabeth.
The Scottish and Irish state papers are calendared in separate series and without much system.
Its value, however, varies; the earlier volumes are not so full as the later, the documents are not so well calendared, and some classes are excluded from earlier, which appear in the later, volumes.
Only state papers are calendared, and as a rule Only those in the Record Office; and the domestic are separated from the foreign.