We have 50 objects that Irwin Untermyer, Esq. 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/18054711/ |title=Irwin Untermyer, Esq. |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=21 June 2018 |publisher=Smithsonian Institution}}</ref>