PEARSON, John. Calcutta 1790 — 1831. British Missionary in India. Worked for London Missionary Society in Bengal
Publications: A School Dictionary, English–Bengali. Calcutta 1829.
Sources: A. K. Biswas, “Rammohun Roy, his intellectual compatriots and their scientific contributions”, Indian Journal of History of Science 46.3, 2011, 427-481 (briefly on p. 450).