South Eastern Union of Scientific Societies, Ingram, T. A., Grinling, C. H., & Polkinghorne, B. C. (1909). A survey and record of Woolwich and West Kent: Containing descriptions and records, brought up-to-date, of geology, botany, zoology, archaeology and industries of the district, with a brief photographic commentary, in commemoration of the 12th Annual Congress, 1907, of the South Eastern Union of Scientific Societies. Labour Representation Print. Co..

South Eastern Union of Scientific Societies, T. A. Ingram, Charles H. Grinling, and B. C. Polkinghorne. A Survey and Record of Woolwich and West Kent: Containing Descriptions and Records, Brought Up-to-date, of Geology, Botany, Zoology, Archaeology and Industries of the District, with a Brief Photographic Commentary, in Commemoration of the 12th Annual Congress, 1907, of the South Eastern Union of Scientific Societies. Woolwich: Labour Representation Print. Co., 1909.

South Eastern Union of Scientific Societies, et al. A Survey and Record of Woolwich and West Kent: Containing Descriptions and Records, Brought Up-to-date, of Geology, Botany, Zoology, Archaeology and Industries of the District, with a Brief Photographic Commentary, in Commemoration of the 12th Annual Congress, 1907, of the South Eastern Union of Scientific Societies. Labour Representation Print. Co., 1909.