@book{114306,
	author = {Aldrich, Eva},
	title = {The blackboard clock},
	publisher = {Project Gutenberg,},
	year = {2024},
	series = {Device Series, No. 1.},
	address = {Salt Lake City, UT :},
	note = {Release date is 2024-05-09},
	url = {https://archive.org/details/blackboardclock00aldr/page/n1/mode/2up}
}