Trigonometrical survey of Port Jackson: commenced as a military survey by order of General Darling and continued as civil duties permitted or required, by Lt Col Sir TL Mitchell Kt DCL Surveyor General of New South Wales

From the collections of the
(engraved by JW Lowry. [London] : T. & W. Boone, New Bond Street, 1853 Insets: General view of Port Jackson taken with Theodolite from Station A in the Year 1829. View of the entrance to Port Jackson taken with Theodolite from Station B in the Year 1853.) (Dixson Map Collection)