| Author | Ohio Brass Company | |
| Title | Birth of an Insulator | |
| Original Date | 1970 | |
| Notes | Transcribed from a sound-slide production on insulator manufacture by the Ohio Brass Company. Undated, but clothing style and mention of computerization of machinery is consistent with 1970s. | |
| Type | Contemporary | |
| Version | Original | |
| Version Author | Ohio Brass Company | |
| Date | 1970 | |
| Version Notes | ||
| Example Type | Original | |
| Size | 5.5" x 8.5" | |
| Pages | 58 |