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> those 2-letter postal abbreviations are pretty much
> _effectively_ obsolete. The street address and zip/
> postal code are what the posties use for standard
> processing.
** But the 2-letter postal abbreviations were introduced
on the same occasion as the 5-digit ZIP code. (Before
that, all we had were abbreviations like Mass. and
Penna.) Maybe someone at the time thought redundant
machine-readable information would help ensure accuracy?
Mark L. Levinson
mark -at- matis -dot- ingr -dot- com
