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In-Glass Direct
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Wide variety of colorful insulators and 'go-withs', offered for sale direct from two collectors in Connecticut. www.in-glass.com/direct
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Spec-Tru Glass Color Reference Tool
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A color reference system combining the functions of colorimeter and spectrograph as a tool for identifying the colors in glass collections. www.spec-tru.com
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Open Wire Insulator Services
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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. www.open-wire.com
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The Insulator Store
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Insulator enthusiasts provide for sale a large selection of insulators, the latest insulator price guide, and supplies for collectors. www.insulatorstore.com
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