{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Oil and gas map of southwestern Pennsylvania, 1915","author_name":"Pennsylvania. Topographic and Geological Survey Commission.","thumbnail_url":"https://www.ebooknetworking.net/books/B00/8TH/bigB008TH8A08.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B008TH8A08.html\">Oil and gas map of southwestern Pennsylvania, 1915</a>","width":400,"height":300}