| http://digfir-published.macmillanusa.com/bedford_digital_collections/bdc_gold_rush_2.html | Chapter 1. James K. Polk, State of the Union Address, December 5, 1848 (excerpt)
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| http://digfir-published.macmillanusa.com/bedford_digital_collections/bdc_gold_rush_2_dlap.xml | DLAP questions | 528565d9757a2eed49000000 |