First World War (1914-1918)
Pozzoni -

The Great depression (1929-1932)
Valtorta - On the verge of bankruptcy, St. Margaret's Church (1933-1971 under PIME);
公教報 1928, 中和日報 1932, Catholic Truth Society 1934

Second World War (1939-1945)
Valtorta - St. Francis Assisi Church, Kowloon City (1937-43),
concentration camp: Italian, German; Irish, American ; Portuguese,
evacuation, Macau
教友人數由二萬銳減至三千
恩理覺主教於1942年初就對宗座駐日公使請求派日藉神父和修女到香港。至1943年夏天,日本天主教會決定將1位日藉神父和2位日藉修女派到香港,但是11月中這3位搭乘的船在臺灣海峽被攻擊沈沒,他們都喪命。

Civil Wars (1945-1949)
Valtorta - Chinese Church Hierarchy 1946
Sunday Examiner 1946

Refugees: clergy and lay people (1949-69)
Bianchi - Vatican policy
Churches 1842-1895,1953-61, 62-66, 67-75
Schools 1860-1896, 1953-60, 61-66, 67-75

• 烽火十八日- 劉蘊遜整理
  
• Jesuits under Fire - in the siege of Hong Kong 1941 - Thomas F. Ryan S.J.
  
• 日佔時期的香港天主教 日本東京大學 博士候選人 倉田明子
  
• Catholic Churches in Hong Kong under Japanese Occupation - University of Tokyo PhD Candidate Akiko Kurata
  
• Chapters 18-22, "The Story of a Hundred Years".