{"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","author_name":"United States. Bureau of the Census, .","thumbnail_url":"https://www.ebooknetworking.net/books/B00/30E/bigB0030EH1IM.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0030EH1IM.html\">Heads of families at the first census of the United States taken in the year 1790</a>","width":400,"height":300}