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| 1. |  | Unidentified photographer / artist n.d. Thermoplastic union case "Henry Clay" with the steel mold that was used to create it. Photographic case Archives of Modern Conflict OR National Gallery of Canada The case was made by F.C. Key and Son of Philadelphia, PA. |
| 2. |  | Unidentified photographer / artist n.d. Steel mold for the "Henry Clay" thermoplastic union case Photographic case Archives of Modern Conflict OR National Gallery of Canada The case was made by F.C. Key and Son of Philadelphia, PA. |
| 3. |  | Unidentified photographer / artist n.d. Reverse of the steel mold for the "Henry Clay" thermoplastic union case Photographic case Archives of Modern Conflict OR National Gallery of Canada The case was made by F.C. Key and Son of Philadelphia, PA. |
| 4. |  | Unidentified photographer / artist n.d. The "Henry Clay" thermoplastic union case the steel mold that created it an a contemporary Daguerreotype copy of a portrait of Henry Clay. Photographic case Archives of Modern Conflict OR National Gallery of Canada The case was made by F.C. Key and Son of Philadelphia, PA. |
| 5. |  | Unidentified photographer / artist n.d. The interior of the "Henry Clay" thermoplastic union case made by F. C. Key & Son. Photographic case Archives of Modern Conflict OR National Gallery of Canada The advertising message reads: F. C. KEY & SON, Manufacturers of the Excelsior Ambrotype CASE. F.C. KEY & SON Are the Original Inventors of the INSERTED HINGE AND CATCH, far superior to all others, being im- bedded in the case when pressed, and warranted not to break out or spring, as do all others that are riveted, or inserted with or without a metal brace. PHILADELPHIA, PA. |