ProQuest (Firm) 66,922 ProQuest ebook central 21,141 Project Muse 11,025 Prokofiev, Sergey, 1891-1953 10,097 Puccini, Giacomo, 1858-1924 8,927 Philharmonia Orchestra (London, England) 6,368 Purcell, Henry, 1659-1695 6,060 Practising Law Institute 5,734 Plato 5,704 Princeton University Plasma Physics Laboratory 5,328 Poulenc, Francis, 1899-1963 5,104 Philadelphia Orchestra 4,840 Pope, Alexander, 1688-1744 4,489 Parke-Bernet Galleries 4,395 Penn Sexuality Collection (University of Pennsylvania) 4,319 Petrarca, Francesco, 1304-1374 4,144 Pushkin, Aleksandr Sergeevich, 1799-1837 4,040 Pennsylvania 3,673 Poe, Edgar Allan, 1809-1849 3,646 Plutarch 3,554 Paramount Pictures Corporation 3,341 Palestrina, Giovanni Pierluigi da, 1525?-1594 3,198 Picasso, Pablo, 1881-1973 3,157 Portugal 3,148 Princeton University Library 3,123 Pillar Collection (Brown University) 3,099 Prendismo, LLC (Firm) 2,929 Peru 2,764 Poland 2,746 Public Broadcasting Service (U.S.) 2,703 Princeton University Department of Physics 2,650 Piazzolla, Astor 2,539 Pakistan 2,468 Piave, Francesco Maria, 1810-1876 2,435 Philippines 2,429 Princeton University Department of Mathematics 2,399 Penn, William, 1644-1718 2,373 Paganini, Nicolò, 1782-1840 2,359 Paine, Thomas, 1737-1809 2,303 Plautus, Titus Maccius 2,286 Pan American Union 2,157 Peter Burton Collection (Beinecke Rare Book and Manuscript Library) 2,108 Pacific Northwest Research Station (Portland, Or.) 2,105 Pound, Ezra, 1885-1972 1,982 Perrault, Charles, 1628-1703 1,934 Prynne, William, 1600-1669 1,897 Pacific Northwest Forest and Range Experiment Station (Portland, Or.) 1,852 Princeton University Department of Molecular Biology 1,799 Pergolesi, Giovanni Battista, 1710-1736 1,795 Porter, Cole, 1891-1964 1,792 Priestley, Joseph, 1733-1804 1,789 Persius 1,739 Phi Beta Kappa Library Trust Fund 1,727 Ponchielli, Amilcare, 1834-1886 1,721 Previn, André, 1929-2019 1,633 Paganini, Nicolò, 1782-1840 1,613 Princeton University Department of Chemistry 1,528 Pachelbel, Johann, 1653-1706 1,527 Peres, Shimon, 1923- 1,484 Portugal and Brazil Digitization Project (John Carter Brown Library) 1,452 Pennsylvania General Assembly 1,436 PBS (Firm) 1,434 Princeton University Department of Music 1,423 Pärt, Arvo 1,405 Penderecki, Krzysztof, 1933-2020 1,399 Peterson, Oscar, 1925-2007 1,383 Pound, Roscoe, 1870-1964 1,336 Pascal, Blaise, 1623-1662 1,331 Proust, Marcel, 1871-1922 1,322 Pérez Galdós, Benito, 1843-1920 1,321 PBS Video 1,319 Paramount Home Entertainment (Firm) 1,310 Peter E. Palmquist Photography Collection (Beinecke Rare Book and Manuscript Library) 1,299 Philadelphia Record 1,296 Pirandello, Luigi, 1867-1936 1,270 PBS Home Video 1,255 Public Affairs Television (Firm) 1,245 Paisiello, Giovanni, 1740-1816 1,239 Pavarotti, Luciano 1,223 Polskie Radio Wielka Orkiestra Symfoniczna 1,204 Pindar 1,187 Praetorius, Michael, 1571-1621 1,169 Parker, Charlie, 1920-1955 1,163 Ptolemy, active 2nd century 1,146 Persichetti, Vincent, 1915-1987 1,130 Philadelphia Museum of Art 1,128 Prussia (Germany) 1,109 Patrick, Simon, 1626-1707 1,103 Paz, Octavio, 1914-1998 1,103 Princeton University Department of Ecology and Evolutionary Biology 1,098 Pliny, the Younger 1,094 Prussia (Kingdom) 1,094 Project Air Force (U.S.) 1,092 Pessoa, Fernando, 1888-1935 1,086 Pleyel, Ignaz, 1757-1831 1,075 Pneu Michelin (Firm) 1,070 Perlman, Itzhak, 1945- 1,063 Planché, J. R (James Robinson), 1796-1880 1,058 Peres, Shimon, 1923-2016 1,055 Program in Media Arts and Sciences (Massachusetts Institute of Technology) 1,048