Ramsay (E. B. Dean of Edinburgh) Reminiscences of Scottish Life and Character. 5th edit. Edinburgh, 1859.

Ranke (L.) Die Römischen Päpste. Berlin, 1838, 1839. 3 vols.

Ranke (L.) The Ottoman and the Spanish Empires in the Sixteenth and Seventeenth Centuries. London, 1843.

Ranke (L.) Civil Wars and Monarchy in France in 16th and 17th Centuries. London, 1852. 2 vols.

Raumer (F. von) History of the Sixteenth and Seventeenth Centuries, illustrated by original Documents. London. 1835. 2 vols.

Ray (J.) Second Itinerary in 1661, in Memorials of Ray, edited by E. Lankester for the Ray Society. London, 1846.

Ray (J.) Correspondence, edited by E. Lankester. Ray Society, 1848.

Reid (T.) Essays on the Powers of the Human Mind. Edinburgh, 1808. 3 vols.

Reid (T.) An Inquiry into the Human Mind on the Principles of Common Sense. 7th edit. Edinburgh, 1814.

Relations des Ambassadeurs Vénitiens sur les Affaires de France au XVIe Siècle. Paris, 1838. 2 vols. 4to.