Florence Mill
Also known as U.S. Envelope Building
Many listed buildings are private homes. Please enjoy them from the street.
About Florence Mill
Florence Mill, at 121 W. Main St., was added to the National Register of Historic Places on Jul 18, 1978: the first place in Vernon to be listed. Only 242 of Connecticut’s 1,629 listings are older. The Register lists it for its industry, commerce and architecture, at the local level. It describes its style as Second Empire, as it does for 66 other Connecticut listings. The listing covers 6.4 acres.
What it isBuilding in Connecticut, United States. From Wikidata (CC0). Read about it on Wikipedia ↗
PDFRead the original nominationThe form that put it on the Register, with its history, photos and a map · 23 MB · National Archives↗Make it a walk: 3 landmarks in about 15 minutes
121 W. Main St., Vernon · about 0.4 miles on foot, as the crow flies
2 more Register listings within 2 miles
★ National Historic Landmark · D district · B building · S site. Each opens its own page.
Second Empire style, nearby
Other National Register listings within 25 miles described as Second Empire.
Memories of Florence Mill
The record says what it is. Neighbors know what it means.
Your answer becomes a post in Town Square.
Questions about Florence Mill
Is Florence Mill on the National Register of Historic Places?
Yes. It was added on Jul 18, 1978 (Register number 78002858).
Is Florence Mill a National Historic Landmark?
No. It is on the National Register; Connecticut has 64 National Historic Landmarks. The nearest is Cheney Brothers Historic District, 7.7 miles away.
Can you visit Florence Mill?
Our record doesn’t say whether it is open to visitors. Many listed buildings are private, so it may only be seen from the street.
Where can I read the history of Florence Mill?
In its National Register nomination, the form that put it on the Register: a 23 MB PDF at the National Archives, linked on this page.
Sources: National Park Service, National Register of Historic Places (05/22/2026) · National Archives catalog record 132356004 · Wikidata. Map tiles © OpenStreetMap contributors.