CLIO is the online catalog to Columbia University Libraries (including Barnard), but excluding Teacher's College and the Law Library who maintain their own catalogs. CLIO contains over 7 million records for books, online resources, journals & newspapers, conference proceedings, sound recordings & scores, videos, archival collections & oral history transcripts, online databases, maps & images, and more!
CLIO is the library catalog for the Columbia Library System (including Barnard Library, but excluding Teachers College and some information from the Law Library). In CLIO you can find books and media materials, search for different kinds of databases, and find articles within those databases as well.
What is CLIO? from IMATS @ Barnard on Vimeo.
Some of these databases have lists of plays with where they're published, but many include the full text of plays.
To find plays as ebooks in CLIO, try a search for online books. You can always limit by language, publication date, and put in a search term (e.g., "monologues") to help narrow your search