1. Public Health Reports US National Library of Medicine https://www.ncbi.nlm.nih.gov/pmc/journals/347/ (Last Accessed: 16/03/2018) Public Health Reports US National Library of Medicine https://www.ncbi.nlm.nih.gov/pmc/journals/347/ (Last Accessed: 16/03/2018)
2. Hathi Trust Digital Library https://www.hathitrust.org (Last Accessed: 16/03/2018) Hathi Trust Digital Library https://www.hathitrust.org (Last Accessed: 16/03/2018)
3. Statistics Sweden -- Historical Statistics http://www.scb.se/en_/Finding-statistics/Historical-statistics/Some-facts-about-historical-statistics/ (Last Accessed: 14/03/2018) Statistics Sweden -- Historical Statistics http://www.scb.se/en_/Finding-statistics/Historical-statistics/Some-facts-about-historical-statistics/ (Last Accessed: 14/03/2018)
4. Digitisation of Bidrag till Sveriges officiella statistik (BiSOS) -- Project Report http://www.rj.se/GlobalAssets/Slutredovisningar/2006/Rolf-Allan_Norrmosse_eng.pdf (Last Accessed: 14/03/2018) Digitisation of Bidrag till Sveriges officiella statistik (BiSOS) -- Project Report http://www.rj.se/GlobalAssets/Slutredovisningar/2006/Rolf-Allan_Norrmosse_eng.pdf (Last Accessed: 14/03/2018)
5. Online Historical Population Reports (histpop) http://www.histpop.org/ (Last Accessed: 14/03/2018) Online Historical Population Reports (histpop) http://www.histpop.org/ (Last Accessed: 14/03/2018)