- Munnell, Alicia H., author5
- National Library of Medicine (U.S.). Index Section.5
- Newman, Matthew, author5
- Nikitin, Dmitriy, author5
- Noble, Charles P. (Charles Percy), 1863-1935, author5
- Oliver, Daniel, 1787-18425
- Packard, A. S. (Alpheus Spring), 1839-1905, author5
- Paine, William, 1821-5
- Park, Edwin, author5
- Parke, Davis & Company.5
- Parsons, Ralph L. (Ralph Lyman), 1828-1914, author5
- Paxton, James, 1786-18605
- Peter, Robert, 1805-18945
- Peterson, Frederick, 1859-1938, author5
- Pooley, J. H. (James Henry), 1839-1897, author5
- Priestley, Joseph, 1733-18045
- Putnam, James Jackson, 1846-1918 author5
- Rasmussen, Petra W., author5
- Richardson, Joseph, 1824-18905
- Roygardner, Lauren, author5