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<DIV>I don't think the corpus is available for download, but Yasumasa Someya has an online KWIC concordancer for a 1 million word business letter corpus (which I use to help prepare classes on business email writing for ESL learners)...</DIV>
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<DIV><A href="http://ysomeya.hp.infoseek.co.jp/">http://ysomeya.hp.infoseek.co.jp/</A><BR><BR></DIV><B><I></I></B></DIV>
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