If you would like to browse the collection, use the following Library of Congress Call Number Ranges relevant to different aspects of theater research:
GT500-2370 Manners and customs-- Costume. Dress. Fashion
MT955-956 Musical theater
NK1700-2195 Interior decoration
NK 2200-2750 Furniture
PE1700-3602 English Language—Dialects. Provincialisms, etc.
PE3701-3729 English Language—Slang. Argot, etc.
PN1530 Literature-General-The monologue
PN1560-1590 The performing arts. Show business
PN1600-3307 Drama
PN1660-1693 Technique of dramatic composition
PN1720-1861 History
PN1865-1988 Special types
PN1993-1999 Motion pictures
PN1997-1997.85 Plays, scenarios, etc.
PN2000-3307 Dramatic representation. The theater
PN2055 Business of acting
PN2061-2071 Art of acting
PN2067 Costume design
PN2068 Stage makeup
PN2071 Mime
PN2071 Stage combat
PN2085 Stage management
PN2085-2091 The stage and accessories
PN2091 Set design
PN2091 Stage lighting
PN2091 Stage props
PN2131-2193 By period
PN2131-2145 Ancient
PN2152-2160 Medieval
PN2171-2179 Renaissance
PN2181-2193 Modern
PN2219.3-3030 Special regions or countries
PN3035 The Jewish theater
PN6110.5-6120 Drama (Collections of General Literature)
PR621-744 English Literature--Drama
PS330-353 American Literature--Drama
TS1300-1865 Textile industries