In the spring of 2004, while emptying a container of waste paper, the owner of a recycling company in Kerkrade, Netherlands found an extensive set of documents from the Dora Trials as well as original photographs of the initial liberation of Mittelbau-Dora and its auxiliary camps. It was not possible to identify how these documents came to be in the waste container. However, it is clear they were from the estate of William Aalmans, the Dutch citizen who served with the U.S. Army in the liberation of Mittelbau-Dora and then worked for the prosecution in the Dora Trial. In the beginning of July 2004, all the documents were given over to the Mittelbau-Dora Concentration Camp Memorial (). The documents, many of which were previously unknown, are an extremely valuable addition to the collection. Many are now on display at the new permanent exhibition at the former camp site, opened in April 2006."Aus dem Müll in die Gedenkstätte" in: Neue Nordhäuser Zeitung Online July 7, 2004 In German. Retrieved 02-25-2012
