Correspondence between H B Selby and J T Pollard (various subjects) c. 1921 - 1930; to the Tariff Board about scientific glassware, 1924; to George McLean about the threat of boycott by Sydney University departments if Collins is sacked, 1925; with F L McLaren re job, 1925; with Tax Department, 1926; with Townson and Mercer, England about the use of that name in Australia, 1929; Balance sheet, 1921.