NHDC is a national centre for the transcription, encoding and dissemination of nominative records since 1981 and currently hosts the Historical Population Register of Norway (HPR). HPR will include the records of the 9.7 million people who lived in Norway in the period from 1801 to 1964. By linking individual and contextual attributes derived from censuses and church records, life trajectories across multiple generations are built. NHDC adheres to the international standards necessary to render historical material fit for record linkage and statistical use, and have the responsibility for the overall coordination, normalization and formatting of these sources into compatible longitudinal databases which form the key building blocks of HPR. In collaboration with the National Archive, NHDC has been central to the development of the automated record linkage methods used in HPR.