- Lawrence, Robert, 1912-1981.2
- Meetings2
- Music Teachers' National Association.2
- Nikolaidi, Elena, 1909-2002.2
- Paisley, William M., 1903-2
- Philharmonic Society of New York2
- Photographs<br> Hughes, Edwin, 1884-19652
- Photographs<br>Hughes, Edwin, 1884-1965<br> Leschetizky, Theodor, 1830-19152
- Postcards<br>Photographs<br>Hughes, Edwin, 1884-1965<br> Leschetizky, Theodor, 1830-19152
- Serkin, Irene Busch2
- Silhouettes<br>Photographs<br>Hughes, Edwin, 1884-19652
- Spalding, Albert, 1888-1953.2
- Steinway & Sons.2
- Steinway, Theodore E., 1883-19572
- Thebom, Blanche.2
- Walter, Bruno, 1876-19622
- Whiting, Arthur2
- (Dwight David)1
- (Hubert Horatio)1
- (Richard Milhous)1