- Apollo 1
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- Apparent Danger: The Pastor of America's First Megachurch and the Texas Murder Trial of the Decade i...
- Appealing for Liberty
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- Appomattox: Victory, Defeat, and Freedom at the End of the Civil War
- Approaches to American Cultural Studies
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- April 16th: Virginia Tech Remembers
- April 19, 1775: The Midnight Ride of Paul Revere and the Battles of Lexington & Concord
- April 1945
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- AP® U.S. History Crash Course, For the 2020 Exam, Book + Online
- AQA A-level History: The Making of a Superpower: USA 1865-1975
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- Ar'n't I a Woman?: Female Slaves in the Plantation South (Revised Edition)
- Arab Detroit
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- Archangel: The American War with Russia
- Archeological Expedition to Arizona in 1895
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- Archibald Motley Jr. and Racial Reinvention
- Archibald Simpson's Unpeaceable Kingdom
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- Archives of Authority
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- Arctic Alaska
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- Are Indian Reservations Part of the US? US History Lessons 4th Grade Children's American History
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- Areas of Fog
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- Arguing Americanism
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- Arizona Adventure
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- Arizona on Stage
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- Arizona State University
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- Arizona's Yesterday: Being the Narrative of John Henry Cady, Pioneer
- Arizona-Sonora Desert Museum
- Arizona: A Bicentennial History
- Arizoniana
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- Arkansas and the New South, 1874–1929
- Arkansas Beer
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- Arkansas in Modern America since 1930
- Arkansas Late in the Civil War
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- Arkansas/Arkansaw
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- Arlington
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- Armed Love: Inside America's Communes
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- Armor and Arms: An Elementary Handbook and Guide to the Collection in the City Art Museum of St. Lou...
- Arms and Equipment of the Civil War
- Army & Navy Academy
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- Army Life in a Black Regiment - Civil War Memoir
- Army Memoirs of Lucius W. Barber, Company "D," 15th Illinois Volunteer Infantry
- Army Nurse Corps Voices from the Vietnam War
- Army of the Cumberland and the Battle of Stone's River: US civil war
- Army Transportation Corps History: 70 Years of the Corps, 1781 Yorktown Campaign, Military Rail, Log...
- Army Transportation Corps History: White House Landing - Sustaining the Army of the Potomac during t...
- Arnie
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