ProQuest (Firm) 67,182 ProQuest ebook central 21,326 Project Muse 11,041 Prokofiev, Sergey, 1891-1953 10,107 Puccini, Giacomo, 1858-1924 8,934 Philharmonia Orchestra (London, England) 6,370 Purcell, Henry, 1659-1695 6,066 Practising Law Institute 5,734 Plato 5,709 Princeton University Plasma Physics Laboratory 5,329 Poulenc, Francis, 1899-1963 5,111 Philadelphia Orchestra 4,846 Pope, Alexander, 1688-1744 4,492 Parke-Bernet Galleries 4,395 Penn Sexuality Collection (University of Pennsylvania) 4,320 Petrarca, Francesco, 1304-1374 4,144 Pushkin, Aleksandr Sergeevich, 1799-1837 4,052 Pennsylvania 3,674 Poe, Edgar Allan, 1809-1849 3,644 Plutarch 3,554 Paramount Pictures Corporation 3,350 Palestrina, Giovanni Pierluigi da, 1525?-1594 3,198 Princeton University Library 3,176 Picasso, Pablo, 1881-1973 3,156 Portugal 3,147 Pillar Collection (Brown University) 3,100 Prendismo, LLC (Firm) 2,929 Peru 2,764 Poland 2,747 Public Broadcasting Service (U.S.) 2,707 Princeton University Department of Physics 2,650 Piazzolla, Astor 2,601 Pakistan 2,470 Piave, Francesco Maria, 1810-1876 2,439 Philippines 2,429 Princeton University Department of Mathematics 2,400 Paganini, Nicolò, 1782-1840 2,365 Penn, William, 1644-1718 2,361 Paine, Thomas, 1737-1809 2,298 Plautus, Titus Maccius 2,286 Pan American Union 2,158 Peter Burton Collection (Beinecke Rare Book and Manuscript Library) 2,108 Pacific Northwest Research Station (Portland, Or.) 2,106 Pound, Ezra, 1885-1972 1,983 Perrault, Charles, 1628-1703 1,934 Prynne, William, 1600-1669 1,896 Pacific Northwest Forest and Range Experiment Station (Portland, Or.) 1,852 Princeton University Department of Molecular Biology 1,799 Pergolesi, Giovanni Battista, 1710-1736 1,796 Porter, Cole, 1891-1964 1,793 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 1,651 Paganini, Nicolò, 1782-1840 1,614 Pachelbel, Johann, 1653-1706 1,528 Princeton University Department of Chemistry 1,528 Peres, Shimon, 1923- 1,483 PBS (Firm) 1,456 Portugal and Brazil Digitization Project (John Carter Brown Library) 1,452 Pennsylvania General Assembly 1,434 Princeton University Department of Music 1,423 Pärt, Arvo 1,409 Penderecki, Krzysztof, 1933-2020 1,402 Peterson, Oscar, 1925-2007 1,386 Pound, Roscoe, 1870-1964 1,336 Pascal, Blaise, 1623-1662 1,333 Proust, Marcel, 1871-1922 1,322 Pérez Galdós, Benito, 1843-1920 1,321 PBS Video 1,319 Paramount Home Entertainment (Firm) 1,316 Peter E. Palmquist Photography Collection (Beinecke Rare Book and Manuscript Library) 1,299 Philadelphia Record 1,296 Pirandello, Luigi, 1867-1936 1,272 PBS Home Video 1,264 Public Affairs Television (Firm) 1,245 Paisiello, Giovanni, 1740-1816 1,241 Pavarotti, Luciano 1,222 Polskie Radio Wielka Orkiestra Symfoniczna 1,204 Pindar 1,194 Praetorius, Michael, 1571-1621 1,170 Parker, Charlie, 1920-1955 1,164 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.) 1,093 Pessoa, Fernando, 1888-1935 1,086 Pleyel, Ignaz, 1757-1831 1,075 Pneu Michelin (Firm) 1,070 Perlman, Itzhak, 1945- 1,064 Planché, J. R (James Robinson), 1796-1880 1,058 Peres, Shimon, 1923-2016 1,056 Program in Media Arts and Sciences (Massachusetts Institute of Technology) 1,048