WILLIAM ADOLPHUS KNELL (circa 1808 – 1874). HMS ‘Nemesis’ attacking Houchung Fort in the Canton River, 13 March 1841 (First Opium War), signed W.A. Knell, pencil and brown wash heightened with white and scratching out on paper, 16 x 31cm. Provenance: Christie's, China Trade Paintings: Selections from the Kelton Collection, 7 November 2019. 威廉·阿道夫·克奈爾 復仇女神號襲擊廣東海灣圖（第一次鴉片戰爭） 來源：佳士得凱爾頓藏。