Two reference books on clocks 'Watchmakers, clocks, Encyclopaedic Dictionary' by Donald de Carle, 'The watch and clock book, Trouble shooting, Adjustment and Repair', by Arco Publishing, together with 'The motor car, a Practical Manual', by R.W.A Brewer, and Minerals of New south Wales, 1888 by a. Liversidge and Australasian hardware and machinery Diary, 1911, (5)