{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Early History of the Electro-Magnetic Telegraph: From Letters and Journals of Alfred Vail","author_name":"Alfred Vail","thumbnail_url":"https://www.ebooknetworking.net/books/114/489/big1144891906.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1144891906.html\">Early History of the Electro-Magnetic Telegraph: From Letters and Journals of Alfred Vail</a>","width":400,"height":300}