@book{77310,
	author = {Keeler, James Edward,},
	title = {Photographs of Nebulæ and Clusters, Made with the Crossley Reflector},
	publisher = {Project Gutenberg,},
	year = {2011},
	address = {Salt Lake City, UT :},
	note = {Release date is 2011-06-19},
	url = {https://www.gutenberg.org/ebooks/36470}
}