- Across A Deadly Field: Regimental Rules for Civil War Battles
- Across A Deadly Field: The War in the East
- Across A Deadly Field: The War in the West
- Across America and Back
- Across America by Motor-Cycle
- Across America: The Great West and the Pacific Coast
- Across an Angry Sea
- Across an Untried Sea
- Across Asia On a Bicycle
- Across Coveted Lands or a Journey from Flushing (Holland) to Calcutta Overland
- Across Cultural Borders
- Across Death Valley
- Across Great Divides
- Across Iceland
- Across Many Mountains
- Across Mongolian Plains: a Naturalist's Account of China's 'Great Northwest'
- Across Patagonia
- Across Space and Time
- Across That Bridge
- Across the Barren Landscape
- Across the Blocs
- Across The Border: The Successes And Failures Of Operation Rockcrusher
- Across the Borders
- Across the Boundaries of Race & Class
- Across The Bridge
- Across the Cameroons: A Story of War and Adventure
- Across The Continent with the Fifth Cavalry
- Across the Corrupting Sea
- Across the Creek
- Across the Dark Islands
- Across the Floor
- Across the Great Divide
- Across The Great Divide
- Across The Plains
- Across the Plains in 1884
- Across the Pond
- Across the Reef: The Marine Assault of Tarawa
- Across the Reef: The Marine Assault of Tarawa (Marines in World War II)
- Across the Religious Divide
- Across the Revolutionary Divide
- Across the Rivers: a History of Kamloops
- Across the Sahara
- Across the Seas
- Across the Usa and Canada in 1887
- Across the Ussuri Kray
- Across the Waves
- Across the Western Baltic
- Across the Wire
- Across Unknown South America
- Act of Congress
- Act of War
- Actes des Synodes Provinciaux
- Actes du Xe congrès international d’épigraphie grecque et latine
- Acting for Freedom
- Acting in Terezín
- Acting in the Night
- Acting Up and Getting Down
- Acting White
- Action as History
- Action Directe
- Action in the East
- Action Likely in Pacific
- Action Park
- Action Toys
- Action Words
- Active Defense
- Active Social Capital
- Active tectonics of the Hellenic subduction zone
- Active-Service Diary - 21 January 1917-1 July 1917
- Actividades agro-marítimas em Portugal
- Activism, Feminism, Politics and Parliament
- Activists and Advocates
- Activists in City Hall
- Activitati britanice clandestine in Romania in timpul celui de-al Doilea Razboi Mondial
- Acton of Kilmacurragh Co. Wicklow
- Acton Through Time
- Acton: Prostitution Considered
- Actores sociales, acciones colectivas y transformación social.
- Actors and Audience in the Roman Courtroom
- Actors Cross the Volga
- Acts Against God
- Acts of Aggression
- Acts of Care
- Acts of Conscience
- Acts of Conspicuous Compassion
- Acts of God
- Acts of Modernity
- Acts of Rebellion
- Acts of Union and Disunion
- Acts of Valor: U.S. Navy SEAL's Story of Heroisim
- Acts of Valour
- Actualistic Taphonomy in South America
- Actualité de l’humanisme
- Actualité des protestantismes évangéliques
- Acté – suivi d'annexes
- Acute Melancholia and Other Essays
- Ad Hammamet
- Ada
- Ada Blackjack
- Ada's Journal and Emma's Letters: The Civil War Era Journal and Letters of Emma Peck
- Adad and other Stories
- Adak
- Adam Bede
- Adam Ferguson: Philosophy, Politics and Society
- Adam Smith
- Adam Smith and the Death of David Hume
- Adam Smith and the Origins of American Enterprise
- Adam Smith in Toulouse and Occitania
- Adam Smith. Vivo kaj verko (Historia faklibro en Esperanto)
- Adam's Treasure
- Adams County