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