Authors: Richard
- Melander, Richard 1857-1922
- Meyer, Hugo Richard 1866-1923
- Meyer, Richard E. 1846-1926
- Michaelis, Richard 1839-1909
- Middleton, Richard 1882-1911
- Miller, R. De Witt (Richard De Witt) 1910-1958
- Milnes, Richard Monckton, Baron Houghton 1809-1885
- Mitchell, Richard Arthur Henry 1843-
- Moody, R. S. H. (Richard Stanley Hawks) 1854-1930
- Morris, Richard 1833-1894
- Morris, Richard B. (Richard Brandon) 1904-1989
- Morton, Richard Everett 1930-
- Moulton, Richard G. (Richard Green) 1849-1924
- Mulcaster, Richard -1611
- Muther, Richard 1860-1909
- Mynyddog 1833-1877
- Nettleship, Richard Lewis 1846-1892
- Neumann, Carl W. (Carl Wilhelm) 1871-1939
- Neville, Richard -
- Newton, Richard 1813-1887
- Newton, Richard 1874-1951
- Newton, Richard Heber 1840-1914
- Nixon, Richard M. (Richard Milhous) 1913-1994
- Norton, Richard 1872-1918
- Oblinger, M. M. (Milo Milton) 1900-
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