Paul de Kruif Microbe Hunters (Blue Ribbon Books) Harcourt Brace & Company Inc., New York 1926: ch. VIII Theobald Smith: Ticks and Texas Fever (pp. 234-251)
古代大国列表(英语:List of ancient great powers) 现代大国列表(英语:List of modern great powers) Fueter, Eduard. World history, 1815–1930. United States of America: Harcourt, Brace
Diaries & Letters of Three Hussars. Pen and Sword. 2001: 278. Chichester, Henry Manners. Harcourt, William (1743-1830). Dictionary of National Biography