The prison dataset from the Netherlands covers female prisoners and is therefore particularly interesting. The usual prison selectivity problems apply here and have to be carefully studied, as was done by de Beer (2010) in his study of this prison. The regional and occupational breakdown of the dataset is as follows: The dataset covers birth decades over the period 1790 to 1880 and includes 629 places of birth across all of the Netherlands. There are also 69 distinct occupations listed in Dutch.