{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Heads of Families at the First Census of the United States Taken in the Year 1790: Pennsylvania","author_name":"Bureau of the Census United States, United States Bureau of the Census","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0806303409.html\">Heads of Families at the First Census of the United States Taken in the Year 1790: Pennsylvania</a>","width":400,"height":300}