Creator
- Oliver, Charles E. (Charles Edwin), 1861-1
- Oliver, Roland L.1
- Orange Judd & Company1
- Organización Editorial Novaro1
- Organización Editorial Novaro1
- Painting & Decorating Contractors of America1
- Paleologue, Jean de, 1855-1
- Pasteur, Louis, 1822-18951
- Paterson, David1
- Pepper, John Henry, 1821-19001
- Perkin Memorial Committee1
- Perry, Yvonne1
- Philip Harris and Co.1
- Philip, James Charles1
- Phoebus, V. C., Mrs.1
- Pitman, Isaac, 1813-18971
- Plotnikov, I. S. (Ivan Stepanovich), 1878-1955.1
- Porter Chemical Company1
- Prentice-Hall, Inc.1
- Priestley, Joseph, 1733-18041