National Insulator Association 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.
Crown Jewels of the Wire Magazine Magazine dedicated to the collectors of historic glass and porcelain insulators used by telegraph, telephone and electric power utilities. Includes value finder and subscription information.
Rainbow Riders Trading Post Photos of displays and shows, a few articles, and information about the out-of-print magazine.
Insulator and Telegraph Information Assortment of insulator, telegraph, telegram, mining and vintage document information and graphics. Also, insulator identification drawings and a listing of telegraph company names, and scanned telegrams. Extensive want list and trade item list.
Insulator News & Market Report Here is a commercial advertising a high-end, industry specific journal that serves the commercial electrical market as a source of information on international developments in power transmission and distribution.
Collecting Insulators Information on the hobby of collecting insulators and related collectibles. Contents include pictures of insulators, history of companies, patents, where to find insulators, manufacturing details, insulator terminology, books on the subject, and background on the hobby.
Teleramics - UK Railway Telegraph Insulators Detailed information and photographs on styles, materials, colours used for railway telegraph insulators from the UK. Sections on designers, markings and manufacturers of these products. Sub sections include railway crockery, insulator fixings, telegraph poles, brackets, and railway lighting.
Natsulators Insulator collecting site including photo album, complete collection index, how to get started, links, and insulator embossings of North America.
Exact Insulator Markings Built for collectors, by collectors. The purpose of this site is to collect, list, and share at one source the exact markings on any collectible insulator.
Hungarian Insulators Site of a Hungarian collector; includes many photos and drawings of insulators in use in Hungary.
SignalSpark insulator book SignalSpark is a high quality book celebrating the insulator as an icon of industrial design.
Canadian Railway Telegraph Insulators Pictures insulators used along Canadian railways and telegraph/telephone lines in the 19th and early 20th centuries. There are related links and an email contact as well.
Glassian Collections of Ian Macky, including glass insulators, prism glass, and related history.
Open Wire Insulator Services Conducts periodic auctions, performs appraisals by appointment and offers to purchase collections.
