1 J.C. Williamson (Firm) [J. C. Williamson (theatrical productions) : programs and related material collected by the National Library of Australia] [1883-1972] folders of programs and miscellaneous pieces. Filed in the PROMPT Collection under "J" for J.C. Williamson. Some images available in an electronic version via the Internet at http://nla.gov.au/nla.aus-vn3666467.