Here is a rather large lot of old insulator books that I put together over the last two years or so. Books include The three volumes of tibbits insulator books, 9 issues of Old bottle Magazine (insulator section), Fake altered and repaired insulator handbook, Milhollands reference #2, Milhollands 1972, Collectible porcelain insulators by Gerald Brown, Unipart porcelain book and supplement A, 1967 and 1969 report of glass insulators, The story of insulators and rural telegraph lines and how to build them. A great starter set for collectors. Asking $40 incuding shipping anywhere in the US.