121. Columbia University Rare Book & Manuscript Library, MS X893.19 K71 no. 18 DS ID: DS18728 Title: Letter and Hebrew text Author: Avraham Kopel Feldinger Place: Ukraine Date: 1865.
122. Columbia University Rare Book & Manuscript Library, MS X893 P672 DS ID: DS19324 Title: Pizmonim Author: Shemuʼel, Shelomoh Place: Greece Date: 1889.