| Author | Book Name | |
| Palacio Valdés, Armando, 1853-1938 | La guerre injuste: lettres d’un Espagnol | PDF Book |
| Palliser, Bury, Mrs., 1805-1878 | Brittany & Its BywaysBrittany and Its Byways | PDF Book |
| Papadopoli Aldobrandini, Nicolò, 1841-1922 | Le monete di Venezia descritte ed illustrate da Nicolò Papadopoli Aldobrandini, v. 1Con disegni di C. Kunz | PDF Book |
| Paul, Adolf, 1863-1943 | Das heilige Donnerwetter. Ein Blücherroman | PDF Book |
| Paxson, Susan | Two Latin Plays for High-School Students | PDF Book |
| Peabody, Andrew P. (Andrew Preston), 1811-1893 | A Manual of Moral Philosophy | PDF Book |
| Pessoa, Fernando, 1888-1935 | 35 Sonnets | PDF Book |
| Peyser, Herbert F. (Herbert Francis), 1886-1953 | Johann Sebastian Bach | PDF Book |
| Pictorial Photographers of America | Pictorial Photography in America 1920 | PDF Book |
| Pictorial Photographers of America | Pictorial Photography in America 1922 | PDF Book |
| Pictorial Photographers of America | Pictorial Photography in America 1921 | PDF Book |
| Pierné, Gabriel, 1863-1937 [Arranger] | Gai, gai, marions-nous: Chansons de France | PDF Book |
| Pinches, Theophilus G. (Theophilus Goldridge), 1856-1934 | The Old Testament in the Light of the Historical Records and Legends of Assyria and Babylonia | PDF Book |
| Pinero, Arthur Wing, 1855-1934 | The ‘Mind the Paint’ Girl: A Comedy in Four Acts | PDF Book |
| Planck, Max, 1858-1947 | The Origin and Development of the Quantum Theory | PDF Book |
| Planck, Max, 1858-1947 | Vorlesungen über Thermodynamik. EnglishTreatise on Thermodynamics | PDF Book |
| Planck, Max, 1858-1947 | Eight Lectures on Theoretical Physics, Delivered at Columbia University in 19098 Lectures on Theoretical Physics, Delivered at Columbia University in 1909 | PDF Book |
| Planck, Max, 1858-1947 | The Theory of Heat Radiation | PDF Book |
| Planck, Max, 1858-1947 | Vorlesungen über ThermodynamikSiebente Auflage | PDF Book |
| Pohle, Joseph, 1852-1922 | Grace, Actual and Habitual: A Dogmatic Treatise | PDF Book |
| Poincaré, Henri, 1854-1912 | Sechs Vorträge über ausgewählte Gegenstände aus der reinen Mathematik und mathematischen Physik | PDF Book |
| Poincaré, Henri, 1854-1912 | Science and hypothesis | PDF Book |
| Poore, Henry Rankin, 1859-1940 | Pictorial Composition and the Critical Judgment of Pictures | PDF Book |
| Poulsson, Emilie, 1853-1939 | Finger plays for nursery and kindergarten | PDF Book |
| Proctor, Richard A. (Richard Anthony), 1837-1888 | Chance and Luck | PDF Book |
| Pushkin, Aleksandr Sergeevich, 1799-1837 | Красавице, которая нюхала табакKrasavitse, Kotoraya Niuhala Tabak | PDF Book |