The First Progressive. Time, 50:56, October, 1947.
The First Progressive [link]Paper  bibtex   
@article{noauthor_first_1947,
	title = {The {First} {Progressive}},
	volume = {50},
	url = {https://catalog.hathitrust.org/Record/000598855},
	language = {eng},
	journal = {Time},
	month = oct,
	year = {1947},
	pages = {56}
}

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