| Description | English: Advertising photo by the Tonnesen Sisters for Pittsburgh Plate Glass |
| Date | 1901 |
| Source | Pittsburgh Plate Glass Company catalogue |
| Author | Tonnesen Sisters |
Captioned with a quotation: “The truest mirror, that an honest wife / can see her beauty in.” —The Honeymoon, Act III, Scene 4.
The celebrated Tonnesen Sisters were, by Beatrice Tonnesen’s own account, the first to use photographs of living models in advertising.