Columbia subject headings:
Playwriting--Bibliography.
Theater--United States--Societies, etc.--Directories.
Theaters--United States--Directories.
Harvard subject headings:
Playwriting--Bibliography.
Theater--United States--Societies, etc.--Directories.
Theaters--United States--Directories.
Princeton subject headings:
Directories.
Playwriting--Bibliography.
Theater--United States--Societies, etc.--Directories.
Theaters--United States--Directories.