1. Columbia University Rare Book & Manuscript Library, MS X893.15 Z6 v.42 DS ID: DS19421 Title: Piyyutim Place: undetermined Date: 9--
2. Columbia University Rare Book & Manuscript Library, MS X893 Z8 v.2 no.21 DS ID: DS19962 Title: Piyyutim Place: undetermined Date: 17--