Edward Edwards, Dictionary of National Biography… (1912)
“ His transference to the north-west frontier at Peshawar in 1849 had meanwhile directed his chief attention to the Pushtu or Afghan language, history, and ethnology. To the 'Transactions' of the Geographical Society of Bombay, Raverty contributed in 1851 'An Account of the City and Province of Peshawar,' illustrated with maps and sepia sketches. In order to acquire practical knowledge of the Pushtu tongue he had to collect, arrange, and systematise almost the whole of the needful grammatical and lexical material. ”
