We have one object that Mr. Leo J. Blackman 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/18041687/ |title=Mr. Leo J. Blackman |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=16 August 2018 |publisher=Smithsonian Institution}}</ref>