Plus "letter-size" paper wasn't the standard until the 1980s, and most of the world uses an actual standard, A4.
> The American Forest and Paper Association argues that the dimension originates from the days of manual paper making, and that the 11-inch length of the page is about a quarter of "the average maximum stretch of an experienced vatman's arms". http://en.wikipedia.org/wiki/Letter_(paper_size)
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Plus "letter-size" paper wasn't the standard until the 1980s, and most of the world uses an actual standard, A4.
> The American Forest and Paper Association argues that the dimension originates from the days of manual paper making, and that the 11-inch length of the page is about a quarter of "the average maximum stretch of an experienced vatman's arms". http://en.wikipedia.org/wiki/Letter_(paper_size)