Henry Cass Demonstration Film
| MPAA Rating: | NR |
| Genre: | Short |
| Country: | United States |
| Produced By: | Lee De Forest |
| Directed By: | Lee De Forest |
| Cast: | Henry Cass |
| In Theaters: | Apr 12, 1923 |
| Runtime: | 5 minutes |
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| MPAA Rating: | NR |
| Genre: | Short |
| Country: | United States |
| Produced By: | Lee De Forest |
| Directed By: | Lee De Forest |
| Cast: | Henry Cass |
| In Theaters: | Apr 12, 1923 |
| Runtime: | 5 minutes |