Creator
- Nassau County Museum Reference Library.1
- Nathalie1
- New England Suffrage League.1
- Nichols, William H.1
- O'Rell, Max, 1848-1903.1
- Office of the Rec. Secretary Georgia Medical Society1
- Oliphant, Mrs. (Margaret), 1828-1897.1
- Oppenheim, E. Phillips (Edward Phillips), 1866-1946.1
- Overton, Robert, 1859-1924.1
- Owne, R.1
- Page, Joseph F.1
- Pardon, George Frederick, 1824-1884.1
- Parkhurst, Charles H. (Charles Henry), 1831-1889.1
- Peck, George W. (George Wilbur), 1840-1916.1
- Perine, George Edward, 1837-18851
- Pettengill, S. B. (Samuel Barrett), 1839-1909.1
- Pettis, George H.1
- Phillips' Photographers1
- Pike, Albert, 1809-18911
- Praed, Campbell, Mrs., 1851-1935.1