_French Revolution_, 1837, 1839.
_Critical and Miscellaneous Essays_, 1839, 1840, 1847, 1857.
(In these were reprinted Articles from _Edinburgh Review_, _Foreign Review_, _Foreign Quarterly Review_, _Fraser's Magazine_, _Westminster Review_, _New Monthly Magazine_, _London and Westminster Review_, _Keepsake Proceedings of the Society of Antiquaries of Scotland_, _Times_).

_Chartism_, 1840.

_Heroes, Hero-worship, and the Heroic in History_, 1841.
_Past and Present_, 1843.

_Oliver Cromwell's Letters and Speeches: with Elucidations_, 1845.

_Thirty-five Unpublished Letters of Oliver Cromwell_, 1847 (Fraser).