We have 5 objects that Peter Haythornthwaite 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/18048881/ |title=Peter Haythornthwaite |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=27 September 2022 |publisher=Smithsonian Institution}}</ref>