Subject collections

This reference work directory identifies specialized book holdings across North America. It records the subject strengths of collections kept by academic, college, public and special libraries, as well as museums in the United States and Canada, drawing on what those institutions reported about their own collections.

It is intended for librarians, dealers in rare and antiquarian books, and archivists and museum staff who need to locate particular collections or assess where a subject is well covered. Earlier editions of the title are also noted in the source, though the description text is cut off before naming the full audience.