Preservation is not a _public_ library's primary mission. However public libraries are a relatively new development. National libraries and many private librari

Preservation is not a _public_ library's primary mission. However public libraries are a relatively new development. National libraries and many private libraries do exist to with the primary purpose of preserving information. cf https://www.britannica.com/topic/library/School-libraries https://www.britannica.com/topic/library/School-libraries