Columbia subject headings:
Stage machinery--Great Britain--Patents--Catalogs.
Theatrical paraphernalia--Great Britain--Patents--Catalogs.
Harvard subject headings:
Catalogs
Stage machinery--Great Britain--Patents--Catalogs.
Theatrical paraphernalia--Great Britain--Patents--Catalogs.
Princeton subject headings:
Stage machinery--Great Britain--Patents--Catalogs.
Theatrical paraphernalia--Great Britain--Patents--Catalogs.