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<dl><dd>Asa Gray correspondence files of the Gray Herbarium, Archives of the Gray Herbarium, Harvard University Herbaria</dd>
<dd>Electronic finding aid available:</dd></dl><br>Subjects: Cabinet officers; Dickerson, Mahlon, 1770-1853 -- Correspondence; Gray, Asa, 1810-1888 -- Correspondence; Cabinet officers -- United States -- Correspondence</div>
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Dickerson, Mahlon, 1770-1853 correspondent</div>
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