Insulators: A History and Guide to North American Glass Pintype Insulators by John and Carol McDougald 500 pages, 8 1/2" x 11", softbound, two volume Reference Library (1990)

Volume 1 - History - Color - Subject Index [Sold out]

The most extensive history to date on the manufacture, sale and use of glass pintype insulators. New material never published before in an insulator reference book. 90+ full-color photographs assist in identification and serve as a color reference guide. Index aids research of companies, embossings and historical personalities.

Volume 2 - Pictorial Guide for Threaded and Threadless Pintypes of North America [Sold out]

New, original and full-size black and white photographs of over 320 threaded and 90 threadless CD styles are shown for easy identification. Full embossings are included as well as appropriate patent information regarding specific and unusual insulator styles. Cross Reference Table for Manufacturer and User Embossing to CD Number.

The companion Price Guide is still available.

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Last updated January 1, 2007