This site provides detailed information about the National Insulator Association. Photographs related to collecting glass and porcelain insulators and significant historical data are also available.
National Insulator Association
Insulators : National Insulator Association Home Page
2024-06-08
Insulators: The National Insulator Association (NIA) is an international organization of collectors and friends interested in electrical insulators, and other artifacts connected with the many industries associated with electrical power, telephone, telegraph, railroads and/or lightning protection devices.