Authors: w
- Rossum, Willem van 1854-1932
- Ross, Warner A. 1879-
- Ross, William A. -
- Rothschild, Lionel Walter Rothschild, Baron 1868-1937
- Roughead, William 1870-1952
- Rouse, W. H. D. (William Henry Denham) 1863-1950
- Rouse, William Merriam 1884-1937
- Rowlandson, Mary White -1711
- Rowlands, Walter 1855-
- Rowley, William -
- Royaards, Willem Cornelis -
- Rucker, William Colby 1875-
- Rudolph, R. J. W. (Roelof Jan Willem) 1862-1914
- Ruediger, William Carl 1874-
- Ruffner, William Henry 1824-1908
- Ruland, Wilhelm 1869-1927
- Rummel, Walter 1873-1953
- Runciman, Walter C. -
- Runciman, Walter Runciman, Baron 1847-1937
- Ruoff, Henry W. (Henry Woldmar) 1865-1935
- Rushmore, Arthur W. 1883-1955
- Rushton, William Lowes 1827-1909
- Russell, Bertrand 1872-1970
- Russell, Charles William 1812-1880
- Russell, Dora 1894-1986
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