Insulators - A History and Guide to North American Glass Pintype Insulators

By John and Carol McDougald

Spiral-bound.

13,000 entries are listed by CD number, embossing and color for each embossing. Each CD number has a scale drawing to assist with identification. An expected retail "price range" is given for each listing. The continuous spiral binding allows the book to lie flat for reference work. Appendices to cross reference Manufacturer style number to CD numbers, Primary Embossings to CD numbers, and insulator patent dates and the insulator Consolidated Designs (CD numbers) upon which they are embossed are also included. Also priced are battery rests, spools, miscellaneous glass insulators, commemorative insulators, private issue commemorative insulators, salesman miniature insulators and private issue miniature insulators.

An essential for any collector.

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