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Amazon.com: Polk Audio S20 Signature Series Bookshelf Speakers for Home Theater, Surround Sound and Premium Music, Power port technology, Detachable Magnetic Grille (Pair), Black: Home Audio & Theater
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Book Review | 'A Country of Vast Designs: James K. Polk, the Mexican War, and the Conquest of the American Continent,' by Robert W. Merry - The New York Times
Planned closure of Polk Center marks the end of an era and the start of a battle | Pittsburgh Post-Gazette
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