On 19 February 1937, Queen Wilhelmina of the Netherlands signed a Royal Decree by which she established for once and all that the colors of the Dutch flag are: red - white - blue
Staat der Nederlanden
This digital media file originates from <a rel="nofollow" class="external text" href="https://www.delpher.nl">Delpher</a>, a website of the <a rel="nofollow" class="external text" href="https://www.kb.nl/">Koninklijke Bibliotheek</a>, national library of the Netherlands.