Account of the Operations of the Great Trigonometrical Survey of India, Vol 6, The Principal Triangulation of the South-East Quadrilateral, including the Great Arc, section 18° to 24°, the East Coast series, the Calcutta and the Bider Longtitudinal series, the Jabalpur and the Bilaspur Meridional series, and the details of their simultaneous reduction. J.T. Walker. Dehra Dun, 1880
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 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 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