We have one object that Heinrich H. Coentgen has been involved with.

If you would like to cite this person in a Wikipedia article please use the following template:

<ref name=CH>{{cite web |url=https://www-6.collection.cooperhewitt.org/people/68777303/ |title=Heinrich H. Coentgen |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=17 January 2022 |publisher=Smithsonian Institution}}</ref>