{"product_id":"canadian-insulators-and-communication-lines","title":"Canadian Insulators And Communication Lines","description":"\u003cp\u003eCanadian Insulators And Communication Lines, Colin McIntosh\u003c\/p\u003e\n\u003cp\u003eA reference guide for collectors and researchers interested in the identification and history of glass and porcelain insulators manufactured in Canada. The work includes brief historical overviews of key manufacturers and telecommunication companies such as Dominion Glass, Hamilton Glass Company, Pilkington Glass Company, and the Foster Brothers, as well as early telegraph and railway companies including the Montreal Telegraph Company, Great Northwestern Telegraph Company, Grand Trunk Railway and Telegraph Company, and Dominion Telegraph Company. Additional topics include regional variations such as the White Insulators of the Okanagan and other subjects relevant to Canadian insulator production and telecommunication infrastructure.\u003c\/p\u003e","brand":"Self Published","offers":[{"title":"Default Title","offer_id":44343676436619,"sku":"629","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8566\/7467\/files\/IMG_9362.jpg?v=1763334648","url":"https:\/\/heartofgoldbooks.com\/products\/canadian-insulators-and-communication-lines","provider":"Heart of Gold Books","version":"1.0","type":"link"}