Datasets of the Netherlands (province and municipality level),
class sf
Source
https://www.cbs.nl/ for NLD_prov and NLD_muni.
Details
The default projections for these objects are Rijksdriehoekstelsel (Netherlands).
Important: publication of these maps is only allowed when citing Statistics Netherlands (CBS) and Kadaster Nederland as source.
References
Statistics Netherlands (2014), The Hague/Heerlen, Netherlands, https://www.cbs.nl/.
Kadaster, the Netherlands' Cadastre, Land Registry, and Mapping Agency (2014), Apeldoorn, Netherlands, https://www.kadaster.nl/.