We have 23 objects that Hartmann et Fils 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/18042739/ |title=Hartmann et Fils |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=7 July 2020 |publisher=Smithsonian Institution}}</ref>