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Whitaker, William. (1889). The Geology of London and of part of the Thames Valley; Explanation of Sheets 1, 2, and 7 [Old Series]. Memoir. British Geological Survey.
London. (1880). Wyld’s Map of the Superficial Geology of London and Environs. London: James Wyld. Colour lithograph 1:63,360. Wyld, James, jr..
London. Jordan, J. B. and Whitaker, W. (1894). Stanford’s Geological Map of London: Shewing Superficial Deposits. London: Edward Stanford. 3rd ed. Stanford.