| Year | 1914 |
| Date | 10-Dec |
| Volume | 31 |
| Issue | 711 |
| Page | 534 |
| Category | Materials |
| Part | |
| Title | Photomicrography of Metals |
| Author | Charles E.Heath |
| Notes | Camera & microscope as arranged for photomicrgraphy, microscope arranged for metallurgical use, cast steel, bronze, tungsten, tungsten wire section & cast iron magnified 100 times |