id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
crl-14642	Freeman, Michael Stuart	Pen, Ink, Keys, and Cards: Some Reflections on Library Technology	1991-07-01	8	.pdf	application/pdf	4984	234	60	But many libraries did not purchase their first machine until much later-as late as the 1920s in some cases.20 In the mean- time, practitioners skilled with pen and ink serviced card catalogs. There were about a dozen typewriter brands em- ployed in library work at the turn of the century, but some were clearly not man- ufactured with card typing in mind.	cache/crl-14642.pdf	txt/crl-14642.txt