Essay on toleration (1667): The earliest draft; three other versions of this paper exist.

Letter to Nicolas Toinard, 16/26 December 1668. [facsimile in É. Charavay, Lettres autographes … Alfred Bovet (1887), pp. 413-414, item no. 1129; printed De Beer, i. 432]

Letter to Edward Clarke, 19 January 1699[/1700]. [printed in Rand (ed.), The correspondence of John Locke and Edward Clarke (1927), p. 551 (from a copy made by the Historical Manuscripts Commission); De Beer, vi. 2658]

Letter to Anthony Collins, 13 March 1703/4. [printed in A collection of several pieces (1720), pp. 293-296; De Beer, viii. 3488]