File:Ur AB Nordiska Kompaniets varukatalog. Herrar i hattar och ytterrockar - Nordiska Museet - NMA.0035898.jpg - Wikimedia Commons
Ytterbium Rare Earth Metal 99.95% Pure 10 Grams for Element Collection: Amazon.com: Industrial & Scientific
Rare earth element distribution and mineralization in Sweden: An application of principal component analysis to FOREGS soil geochemistry - ScienceDirect
The village where more elements were discovered than anywhere else | New Scientist
Ytterby, Resarö, Vaxholm, Stockholm County, Sweden
Finnbo (Finbo), Falun, Dalarna County, Sweden
Facts, pictures, stories about the element Ytterbium in the Periodic Table
Radioactive tourism – A trip to the Ytterby mine – Nuclear Power? Yes Please