@book{92025,
	author = {Wilson, John,},
	title = {A Visit to the Mammoth Cave of Kentucky},
	publisher = {Project Gutenberg,},
	year = {2016},
	address = {Salt Lake City, UT :},
	note = {Release date is 2016-02-12},
	url = {https://www.gutenberg.org/ebooks/51187}
}