Account of the Operations of the Great Trigonometrical Survey of India, Vol 10, Electro-telegraphic longtitude operations executed during the years 1881-82, 1882-83 and 1883-84 by Major G. Strahan and Major W.J. Heavisids. C.T. Haig. Dehra Dun, 1887
Account of the Operations of the Great Trigonometrical Survey of India, Vol 11, Astronomical observations for latitude made during the period 1805 to 1885 with a general description of the operations and their final results. G. Strahan. Dehra Dun, 1890
Account of the Operations of the Great Trigonometrical Survey of India, Vol 12, General description of the principal triangulation of the Southern Trigon including the simultaneous reduction and the details of two of the component series: the Great Arc Meridional, section 8° to 18°, and the Bombay Longtitudinal. G. Strahan. Dehra Dun, 1890
Account of the Operations of the Great Trigonometrical Survey of India, Vol 13, Details of the principal triangulation of five of the component series of the Southern Trigon including the following series: the South Konkan Coast, the Mangalore Meridional, the Madras Meridional and Coast, the South-East Coast, the Madras Longtitudinal. G. Strahan. Dehra Dun, 1890
Account of the Operations of the Great Trigonometrical Survey of India, Vol 14, General description of the principal triangulation of the South-West Quadrilateral including the simultaneous reduction and the details of its component series. W.H. Cole. Dehra Dun, 1890
Account of the Operations of the Great Trigonometrical Survey of India, Vol 15, Electro-telegraphic operations executed during the years 1885-86, 1887-88, 1889-90 and 1891-92 and the revised results of arcs contained in Vols 9 and 10; also the simultaneous reduction and the final results of the whole of the operations. G. Strahan. Dehra Dun, 1893
Account of the Operations of the Great Trigonometrical Survey of India, Vol 16, Details of the tidal observations taken during the period from 1873 to 1892 and a description of the methods of reduction by J. Eccles. S.G. Burrard. Dehra Dun, 1901
Account of the Operations of the Great Trigonometrical Survey of India, Vol 17, Electro-telegraphic longtitude operations executed during the years 1894-95-96 [and] The Indo-European arcs from Karachi to Greenwich. S.G. Burrard. Dehra Dun, 1901
Account of the Operations of the Great Trigonometrical Survey of India, Vol 18, Astronomical observations for latitude made during the period 1885 to 1905 and the deduced values of the deflections of the plumb-line. S.G. Burrard. Dehra Dun, 1906
Account of the Operations of the Great Trigonometrical Survey of India, Vol 19, Levelling of precision in India (1858-1909). S.G. Burrard. Dehra Dun, 1910