"After exploring why the library requires redefinition, this second part of a two-part post offers a new taxonomy for allocating library functions and roles.
"How do different libraries balance and provide for these two basic functions in light of the increasingly complex and unpredictable information environment in which they do their work?
It depends. I propose the following basic taxonomy of library types and functions.
Library of Cultural Heritage – A library that is charged with preserving the cultural and intellectual heritage of an entire country, region, or (perhaps) ethnic group.
Research Library of Record – A library, typically funded by a large university or in some cases by a large municipality, with a broadly inclusive and relatively stable circulating collection.
Research Library of Utility – A large and reasonably comprehensive library that is nevertheless characterized by a changeable circulating collection to which books are added and from which they are withdrawn according to the expressed and demonstrated needs of the curriculum, physical space limitations, and the research agendas of its constituency.
Academic Library of Utility – An academic library with a targeted, dynamic collection.
Public Library – [...] almost exclusively serve communities defined by political geography rather than academic mission.
Restricted Library – The working libraries of government agencies, commercial companies, nonprofit organizations, hospitals, and research institutes would all fall under this designation."