Further information about Wilhelm Conrad Röntgen and his sensational discovery:
City of Würzburg
University of Würzburg
Deutsches Röntgenmuseum Remscheid
MedMuseum Erlangen
ISHRAD International Society for History of Radiology
International Day of Radiology
The Story of Radiology Vol 1-3
Wikipedia about Röntgen Memorial in Würzburg
Image Gallery
Quotes about W.C. Röntgen
Wilhelm Conrad Röntgen – Biographical – Nobelprize.org
Scientific Biography encyclopedia.org
Tube collection
List of Röntgen related museums and exhibitions