Citation for Historical samples (pre-1950)

Canada 1852
Lisa Dillon, 1852 Canadian Census Project, Historical Demography Research Infrastructure, CFI New Opportunities Fund Project #7549 and Database of the 1851-1852 Census of Quebec City [dataset]. Montréal, QC: Département de Démographie, Université de Montréal [distributor] and Québec City: Research Programme Population et histoire sociale de la ville de Québec (PHSVQ), Centre interuniversitaire d’études québécoises, Université Laval (CIEQ-Laval). 2011.
Canada 1871
Gordon Darroch and Michael Ornstein, Canadian Historical Social Mobility Project. National Sample of the 1871 Census of Canada [computer file]. Toronto, Ontario: York Institute for Social Research and Department of Sociology, York University, 1979.
Canada 1881
Lisa Dillon, 1881 Canadian Census Project, North Atlantic Population Project, and Minnesota Population Center. National Sample of the 1881 Census of Canada (version 2.0).  Montréal, QC: Département de Démographie, Université de Montréal [distributor], 2008.
Canada 1891
Kris Inwood and Chelsea Jack. National Sample of the 1891 Census of Canada. Guelph, Canada: University of Guelph, 2011.
Canada 1901
Canadian Families Project. National Sample of the 1901 Census of Canada. Victoria, Canada: University of Victoria, 2002.
Canada 1911
Chad Gaffield, Peter Baskerville, Sean Cadigan, Marc St-Hilaire, Claude Bellavance, France Normand, Gordon Darroch, Carl Amhrein, Lorne Tepperman, Charles Jones, and Eric Sager. Canadian Century Research Infrastructure Project. National Sample of the 1911 Census of Canada [dataset]. Edmonton, Canada: University of Alberta [distributor], 2009.

Denmark 1787
Nanna Floor Clausen, Danish National Archives. 1787 Census of Denmark, Version 1.0.
Denmark 1801
Nanna Floor Clausen, Danish National Archives. 1801 Census of Denmark, Version 1.0.

Egypt 1848
Saleh, Mohamed (2013). A Pre-Colonial Population Brought to Light: Digitization of the Nineteenth Century Egyptian Censuses. Historical Methods: A Journal of Quantitative and Interdisciplinary History 46 (1): 5-18. https://doi.org/10.1080/01615440.2012.678807
Egypt 1868
Saleh, Mohamed (2013). A Pre-Colonial Population Brought to Light: Digitization of the Nineteenth Century Egyptian Censuses. Historical Methods: A Journal of Quantitative and Interdisciplinary History 46 (1): 5-18. https://doi.org/10.1080/01615440.2012.678807

Great Britain 1851 (2%)
K. Schürer and M. Woollard. National Sample from the 1851 Census of Great Britain [computer file], Colchester, Essex: History Data Service, UK Data Archive [distributor], 2008.
All Complete-count Great Britain Datasets
K. Schürer and E. Higgs. Integrated Census Microdata (I-CeM), 1851-1911. [data collection]. UK Data Service. 2014. SN: 7481, http://doi.org/10.5255/UKDA-SN-7481-1

Iceland 1703
Ólöf Garðarsdóttir (University of Iceland) and National Archives of Iceland (NAI). 1703 Census of Iceland, Version 1.0.
Iceland 1729
Ólöf Garðarsdóttir (University of Iceland). 1729 Census of Iceland, Version 1.0.
Iceland 1801
Manntal á Íslandi 1801. Reykjavík: Ættfræðifélagið 1980 and Daniel Vasey, Divine Word College, Iowa. 1801 Census of Iceland, Version 1.0.
Iceland 1901
Ólöf Garðarsdóttir (University of Iceland) and National Archives of Iceland (NAI). 1901 Census of Iceland, Version 2.0.
Iceland 1910
Ólöf Garðarsdóttir (University of Iceland) and National Archives of Iceland (NAI). 1910 Census of Iceland, Version 1.0.

Ireland 1901
Catriona Crowe. National Archives of Ireland. 1901 Census of Ireland, version 1.0.
Ireland 1911
Catriona Crowe. National Archives of Ireland. 1911 Census of Ireland, version 1.0.

Mecklenburg-Schwerin 1819
State Main Archive of Schwerin, Population History Lab (MPIDR), and Department of Multimedia and Data Processing, University of Rostock. 1819 Census of Mecklenburg-Schwerin [computer file]. Rostock, Germany: University of Rostock, 2010.

Norway 1801
The Digital Archive (The National Archive), University of Bergen, and the Minnesota Population Center. Census of Norway 1801, Version 1.0. Bergen, Norway: University of Bergen, 2011
Norway 1865
The Digital Archive (The National Archive), Norwegian Historical Data Centre (University of Tromsø) and the Minnesota Population Center. National Sample of the 1865 Census of Norway, Version 2.0. Tromsø, Norway: University of Tromsø, 2008.
Norway 1875
The Norwegian Historical Data Centre (University of Tromsø) and the Minnesota Population Center. National Sample of the 1875 Census of Norway,Version 2.0. Tromsø, Norway: University of Tromsø, 2008.
Norway 1900
The Digital Archive (The National Archive), Norwegian Historical Data Centre (University of Tromsø) and the Minnesota Population Center. National Sample of the 1900 Census of Norway, Version 2.0. Tromsø, Norway: University of Tromsø, 2008.
Norway 1910
The Digital Archive (The National Archive), Norwegian Historical Data Centre (University of Tromsø) and the Minnesota Population Center. National Sample of the 1910 Census of Norway, Version 1.0. Tromsø, Norway: University of Tromsø, 2011.

Sweden 1880
The Swedish National Archives, Umeå University, and the Minnesota Population Center. National Sample of the 1880 Census of Sweden, Version 2.0. Minneapolis: Minnesota Population Center [distributor], 2014.
Sweden 1890
The Swedish National Archives, Umeå University, and the Minnesota Population Center. National Sample of the 1890 Census of Sweden, Version 2.0. Minneapolis: Minnesota Population Center [distributor], 2011.
Sweden 1900
The Swedish National Archives, Umeå University, and the Minnesota Population Center. National Sample of the 1900 Census of Sweden, Version 3.0. Minneapolis: Minnesota Population Center [distributor], 2011.
Sweden 1910
The Swedish National Archives and the Minnesota Population Center. National Sample of the 1910 Census of Sweden, Version 1.0. Minneapolis: Minnesota Population Center [distributor], 2016.

All United States samples
Steven Ruggles, Sarah Flood, Sophia Foster, Ronald Goeken, Jose Pacas, Megan Schouweiler and Matthew Sobek. IPUMS USA: Version 11.0 [dataset]. Minneapolis: University of Minnesota, 2021. https://doi.org/10.18128/D010.V11.0