1. Insulator testing 100KV (with Danger High Voltage fence) Collection: Images from the Rare Book and Manuscript Collections Location: Olmstead Date: 1909-01 Format: Image
2. Insulator testing 100KV (front view) Collection: Images from the Rare Book and Manuscript Collections Location: Olmstead Date: 1909-01 Format: Image
3. Insulator testing 100KV (side view) Collection: Images from the Rare Book and Manuscript Collections Location: Olmstead Date: 1909-01 Format: Image