| Author | Ohio Brass Company | |
| Title | Birth of an Insulator | |
| Original Date | 0 | |
| Notes | Transcribed from a sound-slide prouction on insulator manufacture by the Ohio Brass Company. Publication 2253-H-4 | |
| Type | Contemporary | |
| Version | Original | |
| Version Author | Ohio Brass Company | |
| Date | 0 | |
| Version Notes | ||
| Example Type | Original | |
| Size | 6" x 9" | |
| Pages | 46 |