- National Institutes of Health (U.S.)8
- National Library of Medicine (U.S.). Index Section.8
- Neligan, J. Moore (John Moore), 1815-18638
- New York (State), enacting jurisdiction.8
- New York (State). Department of Health, author.8
- Nichols, Wm. Ripley (William Ripley), 1847-1886, author8
- Palmer, Alonzo Benjamin, 1815-18878
- Parvin, Theophilus, 1829-18988
- Paxton, James, 1786-18608
- Pennsylvania.8
- Peterson, Reuben, 1862-1942, author8
- Pliny, the Elder8
- Porcher, Francis Peyre, 1825-18958
- Preston, George J. (George Junkin), 1858- author8
- Ramsay, David, 1749-18158
- Rauch, John H. (John Henry), 1828-18948
- Reed, Robert Harvey, 1851-1907, author8
- Robinson, Beverley, 1844-1924, author8
- Santos Fernández, Juan, 1847-1922, author8
- Schüssler, Wilhelm Heinrich, 1821-18988