Series:

The term "series" has different connotations in libraries (publisher’s series), museums (artist’s series), and archives (series in a record group). One cannot avoid using the term, however, when trying to convey the relatedness of a group of graphic items . For the purpose of these rules, the term generally connotes a group of items related to each other by the fact that each (or most of the items) bears, in addition to its own title proper (q.v.), a collective title (i.e., series title) applying to the group as a whole. The individual items may or may not be numbered. Because of the circumstances under which a repository acquires original and historical graphic materials , it is quite possible that it might not have all of the items comprising a particular series or, indeed, even know what would constitute a complete series.