Publications for 10/1930

• WILSON: High Frequency Carrier Telephone Line Insulators
• Open wire telephone lines
• Study of telephone line insulators.
• Llewellyn Hemingray sponsors lecture on Oriental and Continental Drama
• Corning Glass Works, Corning, New York
• Bottle makers to exhibit, Hemingray listed
• Hemingray to display at the ABCB convention
• Hemingray Glass Company - Covington, Kentucky