Most monologue and dialogue collections are shelved in the call number range beginning with
(There are also some titles in the PN 4305.M6 area.)
You can go up to the shelves and browse, or you can use the catalog to find a specific title first.
However, that is not the extent of what we own, so don't get discouraged.
Search the library catalog for the subject monologues or dialogues (note that most catalogs and databases use the British spelling of these words).
You can further refine your search by adding keywords: