In Episode 94, Call Number celebrates Preservation Week, to be held this year April 28–May 4. The week’s events aim to raise awareness of the role libraries and cultural institutions play in protecting historic and culturally significant collections. Segments include Traci Sorell, honorary chair of this year’s Preservation Week, discussing the role of preservation through storytelling; Kathleen Monahan, special collections public services supervisor at Boston Public Library, addressing the importance of security in preservation; and Rosie Grayburn and Melissa Tedone, cofounders of the Poison Book Project, talking about their research on potentially toxic bookbinding materials from the 19th century.