![Nobby Clark's Folly at 250 Douglass Street at the southwest corner of Caselli Avenue- 1964 - Max Kirkeberg Collection Nobby Clark's Folly at 250 Douglass Street at the southwest corner of Caselli Avenue- 1964 - Max Kirkeberg Collection](https://diva.sfsu.edu/bundles/image/1455808.x1000.png)
Nobby Clark's Folly at 250 Douglass Street at the southwest corner of Caselli Avenue- 1964 - Max Kirkeberg Collection
![William A. Clark House (AKA: The Copper King Mansion; AKA: Clark's Folly) was a mansion built in 1897 by the firm of Lord, Hewlett & Hull in the Beaux-Arts and Châteauesque style William A. Clark House (AKA: The Copper King Mansion; AKA: Clark's Folly) was a mansion built in 1897 by the firm of Lord, Hewlett & Hull in the Beaux-Arts and Châteauesque style](https://preview.redd.it/william-a-clark-house-aka-the-copper-king-mansion-aka-v0-541pn53hwmy91.jpg?width=446&format=pjpg&auto=webp&s=a390efaa7b5da9ac065a64a18ce4f16f3751e99e)
William A. Clark House (AKA: The Copper King Mansion; AKA: Clark's Folly) was a mansion built in 1897 by the firm of Lord, Hewlett & Hull in the Beaux-Arts and Châteauesque style
![One of New York City's Grandest Mansions to Exist: The Clark Mansion, "Clark's Folly" Fifth Avenue | Mansions, Nyc townhouse, Gothic fireplace One of New York City's Grandest Mansions to Exist: The Clark Mansion, "Clark's Folly" Fifth Avenue | Mansions, Nyc townhouse, Gothic fireplace](https://i.pinimg.com/474x/8f/5a/d8/8f5ad8526977a5a1c97e2ce2aad3e590.jpg)