A play or famous performance, such as Sandra Berhardt as Hamlet, will be discussed in books as well as newspapers and journal. Therefore, you may find relevant criticism in the library catalog. Searching for reviews can easily be done by following a few simple steps.
Try a Subject Heading Search using the playwrite's name, i.e. Beckett, Samuel
Try a Keyword Search using the play name in quotes, i.e. "Streetcar Named Desire"