Two volume set of Insulators, A Guide and History to North American Pintype Insulators by McDougald, 1990, excellent condition.

Milholland's Bicentennial "pink" Edition by Milholland, 1976, excellent nearly unused condition, plus 1979 Milholland price guide.

Dictionary of Glass-Ceramic Insulators Reprint by Kareofelas, Cranfill & Fountain, 1969, binding cover sleeve missing, but book is perfectly intact and in good condition.

Before Threads by Delling, 1971, good condition with 11 page addendum insert.

The Glass Insulator A Comprehensive Reference by Cranfill & Kareofelas, 1973, good condition with 7 page Price Trends addendum insert.

Fake, Altered and Repaired Insulators by Guthrie, 1988, fold down middle, but very good condition.

Insulator Price Guide by McDougald, 2003, excellent like new condition.

800 Insulators by Collector Books, 1971, some cover discoloration, otherwise excellent condition.

Choice Insulators Priced by Terrill, 1972, good condition.

A Guide for Insulator Collectors, Volumes One & Two by Tibbitts, 1968-1969, rust on staples, but overall good condition.

Easily $125+ worth of books if purchased separately, but I'm selling all 14 books as a set for $80, plus USPS Media Mail shipping.