Warped punched cards

[Ray Arachelian]

William Donzelli wrote:
> IBM had duplicating punches that could handle really mangled cards.
> For example, the punch cards used by tube dealers back in the 1960s
> (used for reordering) were typically folded in three inside a sleeve
> of tubes.
>
>   
I remember back in the early 80's, Con Edison used to send a punch card
with their bills to be returned with a check and the inscription "do not
fold, staple or mutilate."  :-)