| Author | Book Name | |
| Rauschenbusch, Walter, 1861-1918 | The Social Principles of Jesus | PDF Book |
| Redner, Lewis, 1830-1908 | Oh Little Town of Bethlehem | PDF Book |
| Reye, Theodor, 1838-1919 | Synthetische Geometrie der Kugeln und linearen Kugelsysteme mit einer Einleitung in die analytische Geometrie der Kugelsysteme | PDF Book |
| Reynolds, Mack, 1917-1983 | Status Quo | PDF Book |
| Reynolds, Mack, 1917-1983 | Ultima Thule | PDF Book |
| Rhoden, Emmy von, 1832-1885 | Der Trotzkopf: Eine Pensionsgeschichte für erwachsene Mädchen | PDF Book |
| Ribaucour, Albert, 1845-1893 | Étude des Élassoïdes, ou, Surfaces A Courbure Moyenne Nulle | PDF Book |
| Richards, John N. | Dramatized Rhythm PlaysMother Goose and Traditional | PDF Book |
| Richardson, Albert D. (Albert Deane), 1833-1869 | The Secret Service, the Field, the Dungeon, and the Escape | PDF Book |
| Rimsky-Korsakov, Nikolay, 1844-1908 | Osnovy orkestrovki. EnglishPrinciples of Orchestration, with Musical Examples Drawn from His Own WorksОсновы оркестровки | PDF Book |
| Roberts, Thomas | Tappet and Dobby Looms: Their Mechanism and Management | PDF Book |
| Rolleston, T. W. (Thomas William), 1857-1920 | Myths & Legends of the Celtic RaceMyths and Legends of the Celtic Race | PDF Book |
| Roscher, Wilhelm, 1817-1894 | Principles of Political Economy, Vol. 1 | PDF Book |
| Rucker, William Colby, 1875- | Measles | PDF Book |
| Russell, Bertrand, 1872-1970 | Introduction to Mathematical Philosophy | PDF Book |
| Russell, C. T. (Charles Taze), 1852-1916 | Studies in the Scriptures, Volume 7: The Finished Mystery | PDF Book |