The 1910 census has been digitally transcribed and proofread from the original source. This immense work has been carried out between 2001 and 2009 by the National Archives’ (NA) transcription units in Stavanger and Voss (82,8 % of the census) and the Norwegian Historical Data Centre’s (NHDC) transcription unit in Målselv (17,2 % of the census). After the digitisation the material has been converted, checked and adapted in different ways by computer- This work was executed in collaboration between the NA in Oslo and the NHDC in Tromsø.

Between September 2009 and November 2010 the National Archives in Oslo has also carried out a comprehensive check of the material, ascertaining that it was complete. The data was checked against the census statistics (NOS), the aggregated census lists, and the house lists where necessary. This work was completed for all municipalities in the country by the time of publication in the Digital Archives (December 1st 2010), except for the capital Kristiania, which will be completed in January 2011. Transcription and computing errors revealed in the data from the census are corrected continuously in the database. This includes data from other municipalities than Kristiania.

In preparation of the census for research purposes, the NHDC has encoded place of birth, occupation and other variables. For more information, see their website: http://www.rhd.uit.no/indexeng.html.

About 65 man-years altogether have been spent on the digitisation of the 1910 census.

Deficiencies in the census

Unlike former censuses, the 1910 census does not lack any entire municipalities in the original source material. However, checks carried out by the NA revealed that about 175 house lists and a few family lists from different municipalities are missing. According to the area lists and main lists the missing house and family lists contain about 4850 individuals. In addition, all the ship lists are missing. Among the deficiencies in the census material are all the mental hospitals in the country and the royal family. A complete list of the deficiencies will be prepared and published here, probably in early February 2011.