The print collection of theatre related materials is located on the 4th floor of Lied Library.
GT1740-1747 Theatrical Costumes
GV1781-1786.31 Theatrical Dancing
MT955-956 Musical Theatre
PN1530-1559 Monologue. Dialogue
PN1560-1590 The performing arts. Show business
PN1635-1650 Relation to, and treatment of, special subjects
PN1660-1693 Technique of dramatic composition (includes playwriting)
PN1865-1988 Special types
PN1991-1991.9 Radio broadcasts
PN1992-1992.92 Television broadcasts
PN1992.93-19 92.95 Nonbroadcast video recordings
PN1993-1999 Motion pictures
PN1997-1997.85 Plays, scenarios, etc.
PN2000-3307 Dramatic representation. The theater
PN2061-2071 Art of acting
PN2085-2091 The stage and accessories
PN2131-2193 By period
PN2219.3-3030 Special regions or countries
PN3035 The Jewish theater
PN3151-3171 Amateur theater
PN3175-3191 College and school theatricals
PN3203-3299 Tableaux, pageants, "Happenings," etc.
You can search the Library Catalog by Subject. This is not an exhaustive list of theatre subject headings. As you find items relevant to your research, take note of the subject headings listed. Using those will help you find similar relevant materials. (Note: the library catalog uses the spelling theater, unless theatre is in the title.) Some useful subjects include: