Single-sheet publication:

A publication printed on a single or composite piece of paper or other material; it may be printed on one or both sides and may be bound or unbound. The content of a single-sheet publication, as here defined, is predominantly textual in nature, though it may contain illustrations that are subordinate or coordinate to the text. (See 5B2 for normally imposed single sheets and 5B15 for single sheets designed to be read unfolded.) See also Folder.