Report on the Pearl Fishery of 1877. Sessional Papers. Colombo, 1877. Fol.
Report on the Pearl Fishery of 1879. Sessional Papers. Colombo, 1879. Fol.
Report on the Pearl Fishery of 1880. Sessional Papers. Colombo, 1880. Fol.
Report on the Pearl Fishery of 1881. Sessional Papers. Colombo, 1881. Fol.
Report on the Pearl Fishery held at Marichchikkaddi during 1890. Sessional Papers. Colombo, 1890. Fol.
Report on the Pearl Fishery of 1891. Sessional Papers. Colombo, 1891. Fol.
Report on the Ceylon Pearl Fisheries. Sessional Papers. Ceylon, 1899. Fol.
Report on the Ceylon Pearl Fisheries. Sessional Papers. Colombo, 1900. Fol.
Twynam (William C.) and Donnan (James)
Reports by the Superintendent of the Fishery and the Inspector of the Pearl Banks, 1887. Sessional Papers. Colombo, 1887. Fol.