 | Tjeerd. Dorus Rijkers; De Heldersche Menschenredder. Published by Egner in Helder (not: Den Helder) in 1928. "Nationaal Reddingmuseum Dorus Rijkers". Archived... 9 KB (944 words) - 12:32, 30 August 2023 |
 | Wikimedia Commons has media related to Willemsoord, Den Helder. Nationaal Reddingmuseum Dorus Rijkers (in Dutch) Marinemuseum (in Dutch) Stichting Museumhaven... 28 KB (3,921 words) - 19:31, 25 March 2024 |