{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Invention of the Track Circuit (illustrated): The history of Dr. William Robinson's invention of the track circuit","author_name":"American Railway Association","thumbnail_url":"https://www.ebooknetworking.net/books/B00/LXN/bigB00LXNMVS2.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B00LXNMVS2.html\">The Invention of the Track Circuit (illustrated): The history of Dr. William Robinson&#039;s invention of the track circuit</a>","width":400,"height":300}