| Phlox | | 1937 | | | Honorable Mention |
| Phlox | | 1930 | | | |
| Phlox | | 1937 | | | Honorable Mention |
| Phoebe Flory | | 1936 | | | |
| Piccole Contadine | | 1939 | | | |
| Pickaninny | | 1935 | | | |
| Picking Up Wood | | 1926 | | | |
| Pickle Fork | | 1925 | | | |
| Picnic, Stage Fort Park, Gloucester | | 1925 | | | |
| Picture Frame | | 1919 | | | |
| Picture of Mary Norris | | 1924 | | | |
| Pierced Silver | | 1937 | | | |
| Pierette | | 1925 | | | |
| Pierrot Entranced | | 1919 | | | |
| Pig Ore | | 1937 | | | |
| Pigs, Brandywine, O. | | 1923 | | | |
| Pine Trees | | 1925 | | | |
| Pink and Yellow | | 1939 | | | |
| Pink Asters | | 1931 | | | Honorable Mention |
| Pink Cliff | | 1932 | | | |
| Pink Tulip | | 1935 | | | |
| Pinon Fence | | 1932 | | | |
| Pitcher and Tray | | 1920 | | | First Prize, Penton Medal for excellence |
| Plains of St. Augustine, N. M. | | 1934 | | | |
| Plane in Hangar | | 1934 | | | |
| Plant with Flowers | | 1933 | | | |
| Planting the Seeds | | 1938 | | | |
| Plants | | 1938 | | | |
| Plants and Fruit | | 1934 | | | |
| Plaque - Polychrome | | 1928 | | | |
| Platter Spoon | | 1937 | | | |
| Play | | 1931 | | | First Prize |
| Playa del Palo | | 1936 | | | |
| Playfulness | | 1929 | | | |
| Playmates | | 1931 | | | |
| Playmates | | 1923 | | | Second Prize |
| Pleasant Valley, Kirtland, Ohio | | 1919 | | | |
| Ploughin Time | | 1938 | | | |
| Plowing on Sunday | | 1936 | | | Second Prize |
| Plowing, Cuyahoga County | | 1923 | | | |
| Plums | | 1931 | | | First Prize |
| Plums and Dahlias | | 1936 | | | Third Prize |
| Poinsetta Plant | | 1931 | | | |
| Point Hill, Gloucester | | 1927 | | | |
| Point Lobos | | 1928 | | | |
| Pokeberry | | 1933 | | | |
| Poker Game | | 1937 | | | |
| Pomegranates Panel | | 1924 | | | |
| Ponies | | 1936 | | | |
| Ponte Vecchio | | 1927 | | | |
