- Prince William County
- Princeton
- Princeton and Wachusett Mountain
- Princeton Football
- Princeton Readings in American Politics
- Princeton, Massachusetts
- Principles of Posse Management
- Prineville
- Print to Fit
- Prison Etiquette
- Prison Life in the Old Capitol and Reminiscences of the Civil War
- Prison Puzzle Pieces
- Prison Puzzle Pieces 2
- Prison Puzzle Pieces 3
- Prisoners Without Trial: Japanese Americans in World War II
- Prisons of Cañon City
- Privacy and the American Constitution
- Private Empire
- Private History in Public
- Private Property and the Origins of Nationalism in the United States and Norway
- Privateering
- Privateers Of Charleston In The War Of 1812
- Probates & Wills Santa Fe, New Mexico, 1774-1896
- Probationary Americans
- Proceedings, Third National Conference Workmen's Compensation for Industrial Accidents
- Proclaim Liberty Throughout All the Land
- Proclaim Liberty Throughout the Land
- Proclamation 1625
- Producing Predators
- Professional Criminals of America
- Profiles in Courage
- Profiles in Leadership: Historians on the Elusive Quality of Greatness
- Profiles of American Writers
- Profiles of English Writers
- Profiting from the Peak
- Profits of War
- Progreso
- Progress and Achievements of the Colored People: Containing the Story of the Wonderful Advancement o...
- Progress and Poverty in Industrial America
- Progressive Cities
- Progressive Conservatism
- Progressive Country
- Progressive Historians
- Progressive Lawyers under Siege
- Progressives at War
- Progressivism's Aesthetic Education
- Progressivism, the Great Depression, and the New Deal
- Progressivism: A Very Short Introduction
- Prohibition Gangsters
- Prohibition in Atlanta
- Prohibition in Bardstown
- Prohibition in Bardstown
- Prohibition in Columbus, Ohio
- Prohibition in Dallas & Fort Worth
- Prohibition in Hamtramck
- Prohibition in Kansas City, Missouri
- Prohibition in South Dakota
- Prohibition in Southwestern Michigan
- Prohibition in the Napa Valley
- Prohibition in the Upper Peninsula
- Prohibition on the Gold Coast of Long Island
- Prohibition Pittsburgh
- Prohibition Wine
- Prohibition, the Constitution, and States' Rights
- Prohibition: A Very Short Introduction
- Project Quick Find
- Project Rebirth
- Projections of Power
- Projections of Power in the Americas
- Prolonging the Agony
- Promised Land
- Promised Land State Park
- Promises Of The Constitution
- Promises to Keep
- Proof of Guilt
- Proof of the Illuminati!
- Proof Through the Night
- Propaganda 1776
- Propaganda, Inc.
- Prophecy and Eschatology in the Transatlantic World, 1550-1800
- Prophet Against Slavery
- Prophet's Prey
- Prophetic City
- Prophetic Encounters
- Prospect Park
- Protecting Sanibel and Captiva Islands
- Protest and Propaganda
- Protest at the 1968 Olympics
- Protestants Abroad
- Protestants and American Conservatism
- Protestants and Pictures
- Protesting Affirmative Action
- Proud Boys and the White Ethnostate
- Prove It On Me
- Providence and the Invention of American History
- Providence Police Department
- Providence's Benefit Street
- Provocative Eloquence
- Proxmire
- Pruitt-Igoe
- Pryor Creek
- Psyche and Soul in America
- Psychiatry in Indiana
- Psychological Warfare and the New World Order
- Psychology Comes to Harlem
- Public Affairs
- Public Affairs And Public Policy
- Public Citizens: The Attack on Big Government and the Remaking of American Liberalism
- Public Enemies
- Public Enemies: Al Capone, John Dillinger, Bonnie & Clyde, and Baby Face Nelson
- Public Lives, Private Virtues
- Public Markets and Civic Culture in Nineteenth-Century America
- Public Relations and Religion in American History
- Public vs. Private: The Early History of School Choice in America
- Public Women, Public Words
- Publicola
- Pueblo
- Pueblo Bonito
- Pueblos of New Mexico
- Pueblos, Plains, and Province
- Puerto Rican Chicago
- Puerto Rican Citizen
- Pug Potter's Journal
- Pug, Tug and Me
- Pugnacious Puritans
- Pugnax The Gladiator
- Pulaski
- Pulaski and the Town of Richland
- Pulaski County
- Pulitzer's Gold
- Pulitzer's School
- Pullman Porters and West Oakland, The
- Pulp Empire
- Punks in Peoria
- Puppetmaster
- Pure America
- Pure and Modern Milk
- Pure Cynical
- Pure Heart
- Purely Academic
- Purging the Poorest
- Puritan Family and Community in the English Atlantic World
- Puritan Spirits in the Abolitionist Imagination
- Puritans in the New World
- Purshia
- Pursuing Privacy in Cold War America
- Pursuit:
- Pushing Cool
- Pushmataha
- Put-In-Bay
- Putnam County