See PMB 1174 and 1175 for administrative history of the Pacific Islands Co Ltd and the Pacific Phosphate Co Ltd.

PIC Sydney/PPC Melbourne, Letters and enclosures to & from Ocean Island, Letterbooks Nos.1-18, 1900-1920;
PPC Melbourne, general letters and accounts re Nauru to & from PPC London, Letterbooks Nos.1-7, 1906-1921, including correspondence with J.T. Arundel and A.F. Ellis;
PPC Melbourne, General letters to & from Nauru, Letterbook Nos.5-16, 1911-1920.
<B>See Finding aids for details.</B>
See also PMB 1174-1176, 1205 & 1207, J.T. Arundel & Co, Pacific Islands Co Ltd & Pacific Phosphate Co, and PMB 480-495, 497-498, for diaries, corresp. & further papers of J.T. Arundel & A.F. Ellis.