I presume you didn't put sequence numbers onto each card, and didn't have access to a card sorter?

>My only college computer class was FORTRAN. We used punch cards, not CRTs. You did NOT want to drop that deck.
>
>>I played with this in high school http://farm3.static.flickr.com/2092/2397460141_585d99eb80_o.jpg
>>
>>My first computer class in college was the first time they had CRT terminals. They had removed all but two of the card read machines and posted signs to get everything off of cards. By the end of the year, the card readers were gone.
>>
>>>Just can believe I've started with this :)
>>>
>>>http://www.masswerk.at/google60/