Rosengarten Family Fund 24,124
Rand Corporation 14,421
Rossini, Gioacchino, 1792-1868 11,873
Ravel, Maurice, 1875-1937 10,930
Rachmaninoff, Sergei, 1873-1943 9,901
Research Publications, inc 9,772
Rand McNally and Company 8,440
Royal College of Physicians of London 8,281
Recorded Anthology of American Music, Inc 7,457
Radovan, Zeʼev 6,840
Riewert Tode Collection of German Student Movements and Counter-Culture 6,284
Rimsky-Korsakov, Nikolay, 1844-1908 5,609
Ruth Neils and John M. Ward Collection of Opera Scores 5,377
Royal Philharmonic Orchestra 5,039
Rosengarten International Fund 3,989
Rhode Island Medical Society Collection (Brown University) 3,937
Reger, Max, 1873-1916 3,897
Rowlandson, Thomas, 1756-1827 3,691
Rilke, Rainer Maria, 1875-1926 3,606
Rousseau, Jean-Jacques, 1712-1778 3,166
Rameau, Jean-Philippe, 1683-1764 3,055
Ruskin, John, 1819-1900 3,029
Reshet 2,822
Ray Nash Book Collection 2,576
Rodgers, Richard, 1902-1979 2,524
Romani, Felice, 1788-1865 2,487
Respighi, Ottorino, 1879-1936 2,407
Racine, Jean, 1639-1699 2,346
Rilling, Helmuth 2,064
Religious Tract Society (Great Britain) 2,017
Rhode Island Medical Society Collection (Brown University) Davenport Collection 1,962
Royal Society of Chemistry (Great Britain) 1,932
Rubinstein, Anton, 1829-1894 1,926
Roosevelt, Theodore, 1858-1919 1,915
Rhode Island General Assembly 1,891
Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.) 1,836
Rabin, Yitzhak, 1922-1995 1,822
Rhode Island 1,784
Radcliffe College 1,731
Rollo Silver Collection (Brown University) 1,715
Russia 1,684
Richter, Sviatoslav, 1915-1997 1,652
Riverside Press (Cambridge, Mass.) 1,641
Russian S.F.S.R 1,638
Rashut ha-sheniyah la-ṭeleṿizyah ṿela-radyo 1,623
Royal Society (Great Britain) 1,623
Rashi, 1040-1105 1,614
Russia (Federation) 1,611
Rider Collection (Brown University) Broadsides 1,606
Royal Academy of Arts (Great Britain) 1,565
Rostropovich, Mstislav, 1927-2007 1,519
Roussel, Albert, 1869-1937 1,513
Rogers, Bruce, 1870-1957 1,512
Rubinstein, Artur, 1887-1982 1,463
Rihm, Wolfgang 1,415
Royal Institute of International Affairs 1,393
Rodrigo, Joaquín 1,377
Rheinberger, Josef, 1839-1901 1,370
Royal Geographical Society (Great Britain) 1,365
Rolland, Romain, 1866-1944 1,342
Rashut ha-sheniyah la-ṭeleṿizyah ṿela-radyo 1,326
Rembrandt Harmenszoon van Rijn, 1606-1669 1,313
Russell, Bertrand, 1872-1970 1,311
Rattle, Simon, 1955- 1,264
Reagan, Ronald 1,259
Rowe, Nicholas, 1674-1718 1,187
Reiner, Fritz, 1888-1963 1,183
Renan, Ernest, 1823-1892 1,183
Royal Opera House (London, England) Orchestra 1,158
Richardson, Samuel, 1689-1761 1,126
Radio-Symphonie-Orchester Berlin 1,125
Rozhdestvenskiĭ, Gennadiĭ 1,120
RM Arts (Firm) 1,103
Rupp Collection (Athenaeum of Philadelphia) 1,071
Royal Anthropological Institute of Great Britain and Ireland 1,048
Raz, Shelomoh 1,037
Rampal, Jean-Pierre, 1922-2000 1,034
Rimbaud, Arthur, 1854-1891 1,024
Reade, Charles, 1814-1884 1,002
Rorem, Ned, 1923-2022 1,001
Rabbi Arthur Hertzberg Scholarly Library 995
Royal Opera House (London, England) 984
Rollo Silver Collection (Brown University) Duplicates not retained 983
RKO Radio Pictures 979
Rossi, Gaetano, 1774-1855 962
Réunion des musées nationaux (France) 961
Raleigh, Walter, Sir, 1552?-1618 958
R.R. Donnelley and Sons Company Training Department Library 957
Reich Rare Judaica Facsimile Collection (University of Pennsylvania) 957
Rabelais, François, approximately 1490-1553? 954
Rota, Nino, 1911-1979 951
Roosevelt, Franklin D (Franklin Delano), 1882-1945 943
Risk Reduction Engineering Laboratory (U.S.) 933
Royal Liverpool Philharmonic Orchestra 933
Reich, Steve, 1936- 922
Rossetti, Dante Gabriel, 1828-1882 915
Rollins, Sonny 914
Ronsard, Pierre de, 1524-1585 914
Raphael, 1483-1520 910
Royal Scottish National Orchestra 902