The harmonized data sets can be linked to to existing LOD and other data infrastructures, and further subjected to statistical analysis, as in our case studies in the next section. Our analysis of the FNB demonstrates the advantages of open availability of library catalogues. The raw MARC entries of the FNB  have been openly released by the National Library of Finland. We have now harmonized, augmented, and enriched this data with the open data analytical ecosystem, and hereby release the final harmonized data set that we have used in this study so that it can be further verified, investigated, and enriched by academics as well as the general public. The open availability allows us to demonstrate the advantages of a reproducible data analysis workflow, which provides a transparent account of every step from raw data to the final results.