1. Columbia University Rare Book & Manuscript Library, MS X893 Si7 DS ID: DS18506 Title: Hebrew texts Author: Max Lilienthal Place: undetermined Date: 18--
2. Columbia University Rare Book & Manuscript Library, MS X893 Z8 v.2 no.1 DS ID: DS19277 Title: Responsa Author: Yaʻaḳov ben Meshulam Zalman Kortsman Place: Ukraine Date: 1865.