1647 - Benefiting from Poland's tolerance, Valerianus Magnus publicly performed a vacuum experiment (Torricelli's experiment), which contradicted official European science.
26–27 December: Wawer massacre perpetrated by the Germans.
October 1939–February 1940: Mass arrests and executions of Poles carried out by the Germans in various parts of Warsaw and in the Kabaty Woods and Palmiry during the genocidal Intelligenzaktion campaign.[33]
1940
Spring–summer: Second wave of mass arrests, roundups, deportations to concentration camps and executions of Poles carried out by the Germans during the AB-Aktion.[34]
16 October: Jewish Warsaw Ghetto established by Germans.
1941 - Another wave of mass arrests, deportations to concentration camps and executions of Poles carried out by the Germans.[35]
11 May: Monument to Georgian officers of the Polish Army who lost their lives in the Katyn massacre, in the Warsaw Uprising and on many fronts of World War II unveiled (see also Georgia–Poland relations).[46]
14 June: Nove Kino Praha[pl] (cinema) in business.
2018 - 22 September: Khachkar commemorating Pope John Paul II and the centennial anniversary of the restoration of Armenian and Polish independence unveiled.[55]
Gembarzewski, Bronisław (1925). Rodowody pułków polskich i oddziałów równorzędnych od r. 1717 do r. 1831 (in Polish). Warszawa: Towarzystwo Wiedzy Wojskowej. p.28.
Megargee, Geoffrey P.; Overmans, Rüdiger; Vogt, Wolfgang (2022). The United States Holocaust Memorial Museum Encyclopedia of Camps and Ghettos 1933–1945. Volume IV. Indiana University Press, United States Holocaust Memorial Museum. p.224. ISBN978-0-253-06089-1.
Będziemy dalej uprawiać ten ogród. 25 lat Filharmonii im. Romualda Traugutta 1983–2008 (in Polish). Warszawa. 2008. p.8. ISBN978-83-928343-0-4.{{cite book}}: CS1 maint: location missing publisher (link)
"Chaczkar ozdobą Skweru Ormiańskiego w Warszawie / Հայկական խաչքարը՝ որպես «Հայկական Պուրակի» զարդ". Awedis (in Polish and Armenian). No.15. 2013. p.1.
"Nowe chaczkary w Zamościu, Warszawie i Kurowie / Նոր խաչքարեր Զամոշչում, Վարշավայում և Կուրովում". Awedis (in Polish and Armenian). No.36. 2018. pp.2–3.
William Henry Beable (1919), "Warsaw", Russian Gazetteer and Guide, London: Russian Outlook
Stephen D. Corrsin (1990). "Language Use in Cultural and Political Change in Pre-1914 Warsaw: Poles, Jews, and Russification". Slavonic and East European Review. 68 (1): 69–90. JSTOR4210168.
Barbara Czarniawska. (2002) Remembering while forgetting: The role of automorphism in city management in Warsaw. Public Administration Review, 62(2): 163-173.
Scott Ury, Barricades and Banners: The Revolution of 1905 and the Transformation of Warsaw Jewry. Stanford, Stanford University Press, 2012.
Theodore R. Weeks (2004). "A city of three nations: 'fin-de-siecle' Warsaw". Polish Review. 49 (2): 747–766. JSTOR25779460.
Wardzyńska, Maria (2009). Był rok 1939. Operacja niemieckiej policji bezpieczeństwa w Polsce. Intelligenzaktion (in Polish). Warszawa: IPN.
Pia̜tek, Grzegorz (2020). Najlepsze miasto świata: Warszawa w odbudowie 1944-1949 (Wydanie Ied.). Warszawa: Wydawnictwo WAB - Grupa Wydawnicza Foksal. ISBN978-83-280-3725-0.