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Pennsylvania's historic places
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National geographic guide to the Civil War national battlefield parks
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The Philadelphia Inquirer's guide to historic Philadelphia
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Pennsylvania's scenic Route 6 : a guide to historic sites, towns and natural lands
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The Plains States
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The Ideals guide to American Civil War places
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Pennsylvania's landmarks from the Delaware to the Ohio
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Hippocrene guide to the Underground Railroad
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Historic battlefields in 500 walks : hiking routes and rambles through the world's most iconic battlegrounds
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Real Philly history, real fast : fascinating facts and interesting oddities about the city's heroes and historic sites
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Historic site inventory for Snyder County
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Pennsylvania Civil War trails : the guide to battle sites, monuments, museums and towns
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Hiking through history Pennsylvania : exploring the state's past by trail
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Jeff Shaara's Civil War battlefields
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Jeff Shaara's Civil War battlefields : discovering America's hallowed ground
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Historical reflections of Centre County, 1970
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Historic buildings of Centre County, Pennsylvania
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The Historic gem that is Bellefonte a guide to the preservation of Historic properties in Bellefonte, Pennsylvania
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Historic resources of the Centre Region : a remembrance of things past
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The great Sioux uprising : rebellion on the Plains, August-September, 1862
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Lonely Planet's wonders of the world : 101 great sights and how to see them on any budget
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Guide to the historical markers of Pennsylvania, erected by the Pennsylvania Historical and Museum Commission
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Guide to the state historical markers of Pennsylvania
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Guide to the state historical markers of Pennsylvania
