Manuscript draft, [?c.1619]x[c.1624], of Edward Herbert’s ‘De Veritate’, which was published in 1624; together with correspondence relating to it, [c.1624]-[c.1645].
Manuscript drafts, 1640-[1640x1648], of Edward Herbert’s ‘De Causis Errorum’, an unfinished treatise on logical fallacies which was included in the third edition of 'De Veritate' (published in 1645).
Manuscript drafts, [1641x1644]-[1642x1645], of Edward Herbert’s ‘De Religione Gentilium’, which was completed in 1645 and published in 1663.
Manuscript drafts, [c.1643]-[1643x1648], of Edward Herbert’s ‘De Religione Laici’.
Miscellaneous notes and treatises, [1640x1648]-[1640x1648], by Edward Herbert on a variety of religious matters.
Notes, drafts and memoranda, [c.1630x1648], by Edward Herbert on a variety of philosophical matters.
'The life and reign of king Henry VIII',
Draft and copy, [c.1634x1640], of Edward Herbert’s ‘Life’ of Henry VIII, which was published in 1649; also included is some of the material used in its composition.
'The Expedition to the Isle of Rhe',
Drafts and copies, [1628x1630]-1631, of Edward Herbert’s ‘Expedition to the Isle of Rhe’, which was published in Latin in 1658.
King, Parliament and affairs of state,
Documents, [c.1590xc.1600]-[c.1642x1648], accumulated by Edward Herbert during the course of his career as Member of Parliament for Montgomery, and during his studies into English politics; many are copies made by him or for him. They include accounts of parliamentary business and history, and of individual political figures; treatises by Herbert on particular aspects of governance and political authority, notably the relationship between king, parliament and the subject; accounts of the origins and course of the civil war; and instruments relating to the government of Montgomeryshire and the Welsh marches.
Documents, [1603x1624]-[1632x1648], accumulated by Edward Herbert in connection with his position as ambassador to France and member of the Council of War; many are copies made by him or for him. They include accounts of France, Spain and the Low Countries, and in particular of their military capabilities; discussions of English foreign policy, and copies of treaties with foreign powers; and accounts of English military expeditions; together with miscellaneous material relating to the work of English ambassadors.