Correspondence with G.G. Stokes regarding the establishment of an observatory in New Zealand, 1887.

Correspondence with the Agent General of Victoria regarding the purchase of instruments for the Melbourne Observatory, 1887, including the acceptance of Grubb's tender for the supply of 13-inch astrographs.

Correspondence with the Melbourne Observatory, 1888-1892, regarding a suitable mounting for the astrographic telescope and the plates for use with it.

Correspondence with tradesmen regarding photographic plates for the Melbourne Observatory, 1891.

Correspondence with the Sydney Observatory, 1887-1891, regarding the best form of photo-objective, the second book of selection, guiding stars sent to Sydney and photographic chemicals.

Correspondence with Sir David Gill, 1887-1890, regarding the curvature of images in star photographs and the Paris Conference.

Correspondence with the Sydney Observatory regarding driving clocks for equatorials and methods of work relating to the astrographic charts, 1893.

Correspondence with the Vatican regarding the supply of photographic plates, 1894.

Correspondence with the Paris Observatory regarding a request by M. Loewy for a copy of the North Polar Chart plate, 1897.

Correspondence with the Melbourne Observatory regarding the method of working on astrographic charts at Greenwich, 1898.

A copy of the papers sent to Cordoba regarding work on the astrographic plates, 1901.

Correspondence with the Paris Observatory concerning whether the Perth Observatory is to join the astrographic work, 1900.

Correspondence with Perth as to where suitable plates can be obtained, 1901.