I know nothing about the Universal Slipper Company, but if you can find out who owned it and they died whilst owning it you can get great details. I found all the details of a large furniture factory, a gold mine defunct, and a grocery wholesales company; 1919 in the deceased estate files at State Records. Stock records, list of employees and salaries etc Some of those files are a gold mine of information. Elizabeth A. Roberts N.S.W. Genealogical and Historical Research Wahroonga NSW