Possible resources for churches containing this category:
edit- Alle middeleeuwse kerken: van Harlingen tot Wilhelmshaven, P Karstkarel (description of over 400 historic (mostly medieval) churches in Friesland, Groningen, Drente and Ostfriesland)
- ISBN10: 9033005581
- ISBN13: 9789033005589
- historischekerken.nl Website with all addresses and photo’s of historic churches in Friesland, Groningen, Drente
- kich.nl (Kennisinfrastructuur Cultuurhistorie) Database containing all rijksmonumenten in the Nederlands.