- In The Cage
- In the Canyons of Shadow and Light
- In the Casa Azul
- In the City of Gold and Silver
- In the City of Love's Sleep
- In the City of Shy Hunters
- In The Closet
- In the Clouds for Uncle Sam or, Morey Marshall of the Signal Corps
- In the Coal Mine Shadows
- In The Company of Angels
- In the Company of the Courtesan
- In the Company of Writers
- In the Control Tower
- In the Country
- In the Country of Last Things
- In the Country of Men
- In the Country of the Young
- In the Courts of the Sun
- In the Dark
- In The Dark
- In the Dark of the Moon
- In the Day of Adversity
- In the Days of the Comet
- In the Days of William the Conqueror
- In the Dead of Night: A Novel (Complete)
- In the Drink
- In the Dutch Mountains
- In the Eastern Seas
- In The End Is My Beginning
- In the End They Told Them All to Get Lost
- In the Eye of the Sun
- In the Fall They Come Back
- In the Field
- In the Fire of the Forge: A Romance of Old Nuremberg (Complete)
- In the Fold
- In the Forest
- In The Fourth Year
- In the Future This Will Not Be Necessary
- In the Game
- In the Garden of Delight
- In the Garden of the Fugitives
- In the Hands of the Cave-Dwellers
- In the Hands of the Malays and Other Stories
- In the Heart of Hidden Things
- In the Heart of the Heart of the Country
- In the Heat of the Light
- In the Heat of the Night
- In the Hollow of Time
- In the House Un-American
- In the House Upon the Dirt Between the Lake and the Woods
- In The Image Of God
- In the Irish Brigade: A Tale of War in Flanders and Spain
- In the King's Name: The Cruise of the "Kestrel"
- In The Kitchen
- In the Lake of the Woods
- In the Land of Dreams
- In the Land of Dreamy Dreams
- In the Language of Miracles
- In the Lap of the Gods
- In the Light of What We Know
- In the Light of You
- In the Loyal Mountains
- In the Mahdi's Grasp
- In the Middle of All This
- In the Midnight Room
- In the Midst of Alarms
- In the Midst of Winter
- In the Mirror
- In the Mist of the Mountains
- In the Name of Liberty
- In the North-West Frontier Province
- In the Onyx Lobby
- In the Palomar Arms
- In the Pines
- In the Pursuit of Truth
- In the Quarter
- In the Quiet After Slaughter
- In the Ravine & Other Stories
- In the Reign of Terror
- In the Reign of Terror: The Adventures of a Westminster Boy
- In the River Sweet
- In the Roar of the Sea
- In the Rocky Mountains: A Tale of Adventure
- In the Satchel, on the Train, Selling Dreams to Nancy
- In the Service of Others
- In the Shadow of Death
- In the Shadow of Green Bamboos
- In the Shadow of Light
- In the Shadow of the Banyan
- In the Shadow of the Eye
- In the Shadow of the Standpipe
- In the Shadow of Wolves
- In the Shadows of the Mosquito Constellation
- In the Shadows of the Sun
- In the Shape of a Man
- In the Silence of Words: A Three-Act Play
- In The Sixties
- In the Skin of a Lion
- In the Sky & Six Stories
- In the Slammer with Carol Smith
- In the South Seas
- In the Springtime of the Year
- In The Stillness
- In The Stillness of Grief
- In the Suburb of Possible Suicide
- In the Time of My Life: Selected Writings
- In the Town of Joy and Peace
- In the Unlikely Event
- In the Valley
- In the Vine Country
- In the Wars of the Roses
- In the Wilderness
- In The Wilderness
- In the Wilds of Africa
- In the Wilds of Florida: A Tale of Warfare and Hunting
- In the Winter Dark
- In The World
- In the Wrong Paradise
- In the Year 2889
- In the Year of Jubilee
- In the Yucatan: A Novel
- In This Block There Lives a Slag…
- In This Land of Plenty
- In This Light
- In This Moment
- In This World
- In Time, Out of Place
- In Times of Siege
- In Troubadour-Land: A Ramble in Provence and Languedoc
- In Trust: The Story of a Lady and Her Lover
- In un chiaro, gelido mattino di gennaio all’inizio del ventunesimo secolo
- In un cielo di stelle scadenti
- In un giorno vispo di pioggia
- In Ungnade - Band II
- In unsern Träumen weihnachtet es schon
- In v gorah odzvanja
- In Valhalla's Shadows
- In Veritas
- In Vino Very Trash
- In vollen Zügen unterwegs
- In volo con te