Rummaging through some old files, I ran into an artifact originating from that time before computers, although this was still in use long after computers became available. Such is the nature of progressive automation that we resist it for long after it first becomes feasible. Eventually the old ways are tossed aside, leaving piles of obsolete artifacts. For some reason I kept one.
The artifact is called a keysort card, also called the McBee Keysort. Its purpose was to record data in such a way that statistical reports could be produced that summarized data across hundreds or thousands of these cards. All of the work to do this was performed manually.