We have one object that J. & J. Kohn 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://collection.cooperhewitt.org/people/68263683/ |title=J. & J. Kohn |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=20 May 2019 |publisher=Smithsonian Institution}}</ref>