DescriptionRonKroon1968.jpg English: Ronald (Ron) Kroon (swimmer) Date 12 September 1968 Source Dutch National Archives, The Hague Fotocollectie Algemeen
of Invention (1968) German The Mothers of Invention at Schiphol, October 1968 Turkish (Mucitliğin anneleri) The Mothers of Invention (1968) determination
Netherlands license. Attribution: Collectie SPAARNESTAD PHOTO/NA/Anefo/Kroon You are free: to share – to copy, distribute and transmit the work to remix