National Archives Maps

The National Archives have some 300,000 maps in the collection. A limited part of this (6200 pieces) is available digitally. Due to the age of the material and its origin (government), the card material is a collection that is eligible to be made available as open data. The map collection is diverse from world maps and panoramas on exotic cities and coasts, to 19th century cadastral maps of South Holland. Due to the age of the material, the majority is available under Public Domain but here and there are some younger map material available under CC0. The center of gravity of the open data cards is based on the Collection Binnenland Hingman, the South-Holland maps (Cadaster and Polder Regulations) and the Collection Buitenland Leupe. Earlier, Open Culture Data published thatablogs about the Collection Buitenland Leupe and the Polder Regulations Cards at the time under Public Domain and CC0 of these datasets. In the two datablogs, the background and origin of the maps are discussed in greater depth. The total of map archives containing open data material can be viewed in the following overview: https://www.gahetna.nl/sites/default/files/bijlagen/kaarten_beschikbaar_onder_een_creative_commons_verklaring_0.pdf (the overview of maps available under a Public Domain or CC0 statement | PDF, 92 KB) The maps from the card collection are available via the Open Search Api. These can be accessed via the URL of the Open Search Api. The description document of the API indicates which fields can be searched.