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Биографические источники об Уокере включают: S. K. Banerji, «Sir Gilbert Walker CSI, ScD, FRS,» Indian Journal of Meteorology and Geophysics 10, no. 1 (1959): 113–117; Geoffrey Taylor, «Gilbert Thomas Walker, 1868–1958,» Biographical Memoirs of Fellows of the Royal Society 8 (November 1962): 166–174; J. M. Walker, «Pen Portrait of Gilbert Walker, CSI, MA ScD, FRS,» Weather 52, no. 7 (1997): 217–220. О работе Уокера в Метеорологическом департаменте Индии см.: D. R. Sikka, «The Role of the India Meteorological Department, 1875–1947,» in Uma Das Gupta, ed., Science and Modern India: An Institutional History, c. 1784–1947, 381–421, vol. 15, part 4, of D. P. Chattopadhyaya, ed., History of Science, Philosophy and Culture in Indian Civilization (Delhi: Pearson-Longman). Об открытии Уокером Южной осцилляции см.: Richard Grove and George Adamson, El Niño in World History (London: Palgrave Macmillan, 2018), chapter 5, «The Discovery of ENSO,» 107–137; Mike Davis, Late Victorian Holocausts: El Niño Famines and the Making of the Third World (London: Verso, 2002), part 3, «Decyphering El Niño,» 211–239.