- Lost Ski Areas of Southern California
- Lost Ski Areas of Southern Vermont
- Lost Ski Areas of Tahoe and Donner
- Lost Ski Areas of the Berkshires
- Lost Ski Areas of the Northern Adirondacks
- Lost Springfield, Massachusetts
- Lost St. Louis
- Lost States
- Lost Steel Plants of the Monongahela River Valley
- Lost Suwannee County
- Lost Symbols?
- Lost Tea Rooms of Downtown Cincinnati
- Lost Toledo
- Lost Towers
- Lost Towns of Central Alabama
- Lost Towns of Eastern Michigan
- Lost Towns of New England
- Lost Towns of North Georgia
- Lost Treasures & Old Mines
- Lost Treasures of American History
- Lost Treasures of the South: Stories of Buried and Lost Treasure
- Lost Trolleys of Queens and Long Island
- Lost Village of Delta, The
- Lost Villages of Scituate, The
- Lost Voices
- Lost Youngstown
- Lot of Bull about Kentucky
- Lotions, Potions, and Deadly Elixirs
- Lotteries in Colonial America
- Lottie Deno - Mysterious Hell Cat of the West
- Louder Than Hell
- Loudoun County
- Loudoun County Fair
- Loudoun County Fire and Rescue Apparatus Heritage
- Loudoun County:
- Louie Louie
- Louis Agassiz
- Louis Bamberger
- Louis Jordan
- Louis Trezevant Wigfall
- Louisa
- Louisa and Louisa County
- Louisa Catherine
- Louisa May Alcott: My Memories of the Civil War
- Louisa on the Front Lines
- Louise Brigham and the Early History of Sustainable Furniture Design
- Louise Thompson Patterson
- Louisiana
- Louisiana Birding
- Louisiana Curiosities
- Louisiana Haunted Forts
- Louisiana Legacies
- Louisiana Prehistory
- Louisiana State University
- Louisiana's Fabulous Foods and How to Cook Them
- Louisiana's Zydeco
- Louisiana: A History
- Louisville
- Louisville and the Civil War
- Louisville Diners
- Louisville in World War II
- Louisville Television
- Louisville's Alma Kellner Mystery
- Louisville's Fern Creek
- Louisville's Germantown and Schnitzelburg
- Lovable Racists, Magical Negroes, and White Messiahs
- Love Amid the Turmoil
- Love and Death in the Great War
- Love and Hate in Jamestown
- Love and Resistance: Out of the Closet into the Stonewall Era
- Love Canal
- Love Deeper Than a River
- Love Goes to Buildings on Fire
- Love Lessons from the Old West
- Love Lies
- Love of Freedom
- Love on the Sound
- Love, Anarchy, & Emma Goldman
- Love, Christopher Street
- Love, Lies, And Murder
- Love, Sex and Marriage in Victorian America
- Love, Sex, and 4-H
- Love, Sex, and Marriage in Colonial America 1607-1800
- Love, Sex, and Marriage in the Civil War
- Loves of Harriet Beecher Stowe
- Low Country
- Lowcountry Confederates: Rebels, Yankees, and South Carolina Rice Plantations
- Lowcountry Hurricanes: South Carolina History and Folklore of the Sea from Murrells Inlet and Myrtle...
- Lowell
- Lowell Irish
- Lowell Observatory
- Lowell Thomas Jr.
- Lowell:
- Lower Brazos River Canals
- Lower Bucks County
- Lower Chattahoochee River
- Lower Merion and Narberth
- Lower Saucon Township
- Lowndes County
- Lowry Air Force Base
- Lowville
- Loyal Subjects
- Loyalty and Liberty
- Loyalty in Time of Trial
- Loyola University Chicago
- Lubbock
- Luck's Wild
- Lucking Out
- Lucky
- Lucky 7
- Lucky Lindy and Lady Lindy
- Lucky Me
- Ludlow
- Luling
- Lunar Attractions
- Lunar Outfitters
- Lunenburg
- Luray and Page County
- Luray and Page County Revisited
- Lust For Life
- Lust on Trial
- Luther and the Reformation - The Life-Springs of our Liberties
- Lutherans and the Longest War
- Lutherans in Western New York
- Lycoming College, 1812–2012
- Lydia Pinkham
- Lying in State
- Lyn-Lake
- Lynch Law in Georgia
- Lynchburg
- Lynching Beyond Dixie
- Lynching Reconsidered
- Lynchjustiz in den USA
- Lyndhurst
- Lyndon B. Johnson
- Lyndon B. Johnson et l'après Kennedy
- Lyndon B. Johnson National Historical Park
- Lyndon B. Johnson und der Vietnam Krieg
- Lyndon Johnson and the American Dream
- Lyndon Johnson and the Great Society
- Lyndon Johnson and the Postwar Order in the Middle East, 1962–1967
- Lynn University 2012 Presidential Debate Commemorative Photo Book
- Lyon Township
- Lyons
- LZ-127 "Graf Zeppelin"
- L’Administration financière des Etats-Unis
- L’attaque de Pearl Harbor
- L’Esclavage aux Etats-Unis
- L’esclavage aux États-Unis [Nouv. éd. revue et mise à jour]
- L’espion qui enterra Kennedy
- L’histoire de Robert Lee
- L’Irlande sociale, politique et religieuse
- L’âme américaine