Authors: ROBERT ROBERTS
- Packard, Robert L. (Robert Lewis) 1928-
- Page-Roberts, F. -
- Palmer, Robert Stafford Arthur 1888-1916
- Paltock, Robert 1697-1767
- Parke, Robert, active 1588 -
- Parkin, George R. (George Robert) 1846-1922
- Park, Robert Ezra 1864-1944
- Patterson, Robert 1829-1885
- Payró, Roberto Jorge 1867-1928
- Payson, George 1824-1893
- Peabody, Robert Swain 1845-1917
- Pears, James Roberts -
- Peary, Robert E. (Robert Edwin) 1856-1920
- Peck, Robert Morris 1839-1909
- Peel, Robert -
- Pennell, Robert F. 1850-1905
- Peter, Robert 1805-1894
- Peterson, Robert, active 1576-1606 -
- Philp, Robert Kemp 1819-1882
- Pinkerton, Robert E. (Robert Eugene) 1882-1970
- Pious, Robert S. (Robert Savon) 1908-1983
- Pistorius, Fritz 1864-1932
- Pitts, J. R. S. (James Robert Soda) 1832-1920
- Playfair, R. Lambert (Robert Lambert), Sir 1828-1899
- Plomer, Henry R. (Henry Robert) 1856-1928
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