Cite

Music/Violin and piano music

MLA

Koch, Frederick R. (Frederick Robinson). Music/Violin and piano music. Box 252, folder 1594. 1884, n.d.. https://collections.library.yale.edu/catalog/2017986.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 252, folder 1594"])(1884, n.d.)[Music/Violin and piano music]. https://collections.library.yale.edu/catalog/2017986.