Grogan Co.

Leading jeweler at turn-of-the-century, based in Pittsburgh

We have one object that Grogan Co. has been involved with.

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<ref name=CH>{{cite web |url=https://www-4.collection.cooperhewitt.org/people/18045127/ |title=Grogan Co. |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=6 February 2025 |publisher=Smithsonian Institution}}</ref>