I have five older reference books that need a new home. The first three are by Gerald Brown: Unique Collectible Insulators 1975, Collectible Porcelain Insulators 2nd edtion 1972, Collectible Porcelain Insulators supplement 1974. Glass Insulator A Comprehensive Reference by Gary Cranfill & Greg Kareofelas 1973, An Insulator Book for Collectors by James Hill & Edward Pickett 1968. All the books are in great shape with no wear or rips. Most have additional papers stuck inside them. Asking $18 plus shipping.