If you would like to cite this person in a Wikipedia article please use the following template:
<ref name=CH>{{cite web |url=https://www-6.collection.cooperhewitt.org/people/2318810795/ |title=Johann Jakob Wilhelm Spängler |author=Cooper Hewitt, Smithsonian Design Museum |accessdate=20 March 2025 |publisher=Smithsonian Institution}}</ref>
