[GreenKeys] [External] Re: OT: New coffee-table book on punched cards

[Jim Haynes]

I don't remember anything about the cards with the sawtooth edge, but the
same concept with an ordinary data processing card where the document
number could be punched into the card so that card sorting equipment
could be used on them.

 	---

 	"Ya can argue all ya wanna, but it's dif'rent than it was."
 	"No it ain't! No it ain't!  But ya gotta know the territory."
 		Meredith Willson, The Music Man