[Milsurplus] Defense Department Drawings found on Computer cards - ?

[COURYHOUSE at aol.com]

I remember  the TRW one I had as kid  was larger  than  35...   i wonder if 
that is still in my  box of  kids   stuff  I still have...   it  was...     
cool!!!
 
 
In a message dated 12/18/2012 10:31:36 A.M. Mountain Standard Time,  
jfor at quikus.com writes:

There  were (are) at lest two standards:

Aperture Cards: Standard IBM 80  column punch cards with a rectangular
opening for 35 mm film. I think it  was 1 drawing per card.