SIPMSY_120106_224
Existing comment:
For decades, mail carriers had to sort their mail into its delivery sequence before they went out on their routes. This process often took several hours. The Carrier Sequence Bar Code Sorter (CSBCS) was one of the first widely implemented machines that automated the sorting of mail down to the delivery sequence. Mail could go directly from the CSBCS to the carrier -- in order and ready to be delivered.
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