| Spec-Tru Glass Color Reference Tool A color reference system combining the functions of colorimeter and spectrograph as a tool for identifying the colors in glass collections. | |
| Open Wire Insulator Services This commercial site presents the details of a full range of collector services including on-line insulator auctions and consignment services, augmented by an optional full-color hardcopy catalog. | |
| The Insulator Store Insulator enthusiasts provide for sale a large selection of insulators, the latest insulator price guide, and supplies for collectors. | |
| In-Glass Direct Wide variety of colorful insulators and 'go-withs', offered for sale direct from two collectors in Connecticut. | |
| The Brookfield Store Features Brookfield history, authentic reproductions of an actual hardbound catalog for sale, plus an insulator store. | |
| Jefferson State Insulator Club A club which draws the majority of its members from Oregon and Northern California. Includes membership information, news and events, webcams, and articles. | |
| Chesapeake Bay Insulator Club Club serving the Mid-Atlantic states; includes schedule of meetings and shows, members list, and show photos. | |
| Blue Ridge Insulator Club A site for insulator collectors in Virginia or North Carolina areas who share a common interest in telegraph, telephone, and electrical insulators. Contains photo gallery and member links. | |
| The Wayback Times - Threadless Insulators Collector's site | |
| 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 | |
| Steve Blair's Website Photos of Lynchburg collection, strains and arrestors and the London/Springfield traveling show. | |
| Spencer Grueninger's Ohio Lightning Rod Insulators Lightning Rod Insulator (LRI) collector's site with items for sale or trade. | |
| Sluggo's Insulator Collecting This personal insulator collecting homepage features Australian and other non-United States-produced glass. Lots of reference information, photos and an 'Insulator of the Month' page. | |
| SignalSpark insulator book SignalSpark is a high quality book celebrating the insulator as an icon of industrial design. | |
| Ross Baird's Insulator Collection A Texas collector of unusual color glass insulators. | |
| Rod's Classic & Antique Antenna Insulators Collector's site with photos of 'go-withs' from old-time radio antenna systems, including 'strain' insulators, lightning arresters, lead-in standoffs, and other related hardware. | |
| Rainbow Riders Trading Post Photos of displays and shows, a few articles, and information about the out-of-print magazine. | |
| Porcelain Insulators Collector, research expert, historian's site | |
| Otter's Insulator Page This collector's site combines pictures with a narrative including: What I Collect, Other Hobby Interests, Guestbook, hobby links and an email contact. | |
| Natsulators Insulator collecting site including photo album, complete collection index, how to get started, links, and insulator embossings of North America. | |