{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Horace Mann's letters on the extension of slavery into California and New Mexico","author_name":"Horace Mann","thumbnail_url":"https://www.ebooknetworking.net/books/142/971/big1429714735.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1429714735.html\">Horace Mann&#039;s letters on the extension of slavery into California and New Mexico</a>","width":400,"height":300}