The Historical Database of Dutch Municipalities (Historische Database Nederlandse Gemeenten (HDNG)) provides a wide range of characteristics of Dutch municipalities in the period 1800 - ca. 1970. This dataset contains the latest 2020 files from the HDNG as received from Onno Boonstra and harmonized by Rick Mourits. The scripts for harmonisation are found here.Variables can be accessed either through municipalities or the HDNG variable codes. This version further has standardized variable descriptions and specifications. The LOD conversion scripts can be found here.