• Still is the Summer Night (1937)
• Wind Over Wisconsin (1938)
• Any Day Now (1938)
• Restless is the River (1939)
• Evening in Spring (1941)
• Sweet Genevieve (1942)
• Shadow of Night (1943)
• The Shield of the Valiant (1945)
• The House of Moonlight (1953)

Mill Creek Irregulars

• The Moon Tenders (1958)
• The Mill Creek Irregulars (1959)
• The Pinkertons Ride Again (1960)
• The Ghost of Blackhawk Island (1961)
• The Tent Show Summer (1963)
• The Irregulars Strike Again (1964)
• The House by the River (1965)
• The Watcher on the Heights (1966)
• The Prince Goes West (1968)
• Three Straw Men (1970)

Judge Peck mysteries

• Murder Stalks the Wakely Family (1934)
• The Man on All Fours (1934)
• Sign of Fear (1935)
• Three Who Died (1935)
• Sentence Deferred (1939)
• The Narracong Riddle (1940)
• The Seven Who Waited (1943)
• Mischief in the Lane (1944)
• No Future for Luana (1945)
• Fell Purpose (1953)

Other

• Bright Journey (1940)
• Oliver, The Wayward Owl (1945)
• The Country of the Hawk (1952)
• The Captive Island (1952)
• Death by Design (1953)
• Empire of Fur (1953)
• Land of Gray Gold (1954)
• Land of Sky Blue Waters (1955)
• The House on the Mound (1958)
• Wilbur, The Trusting Whippoorwill (1959)
• The Hills Stand Watch (1960)
• Sweet Land of Michigan (1962)
• The Beast in Holger's Woods (1968)

• Bat's Belfry (1926)
• The Coffin of Lissa (1926)
• The Devil's Pay (1926)
• The Night Rider (1927)
• The River (1927)
• The Sleepers (1927)
• The Turret Room (1927)
• The Conradi Affair (1928) with Carl W. Ganzlin
• The Philosophers' Stone (1928)
• The Statement of Justin Parker (1928)
• The Tenant at Number Seven (1928)
• The Tenant (1928)
• The Three-Storied House (1928)
• "Melodie in E Minor" (1929)
• The Deserted Garden (1929)
• A Dinner at Imola (1929)
• He Shall Come (1929)
• The House on the Highway (1929)
• The Inheritors (1929)
• An Occurrence in an Antique Shop (1929)
• Old Mark (1929)
• Scarlatti's Bottle (1929)
• The Adventure of the Black Cardinal (1930)^[1]
• "Just a Song at Twilight" (1930)
• Across the Hall (1930)
• The Lilac Bush (1930)
• A Matter of Sight (1930)
• Mrs. Bentley's Daughter (1930)
• The Pacer (1930)
• The Portrait (1930)
• The Whistler (1930)
• The Bridge of Sighs (1931)
• The Captain Is Afraid (1931)
• Prince Borgia's Mass (1931)
• The Bishop Sees Through (1932)
• The Shadow on the Sky (1932)
• The Sheraton Mirror (1932)
• Those Who Seek (1932)
• The House In the Magnolias (1932)
• Birkett's Twelfth Corpse (1933)
• An Elegy for Mr. Danielson (1933)
• Nellie Foster (1933)
• The Thing that Walked on the Wind (1933)
• The Vanishing of Simmons (1933)
• The White Moth (1933)
• A Cloak From Messer Lando (1934)
• Feigman's Beard (1934)
• The Metronome (1934)
• Wild Grapes (1934)
• Mr. Berbeck Had a Dream (1935)
• Muggridge's Aunt (1935)
• Lesandro's Familiar (1936)
• The Return of Sarah Purcell (1936)
• The Satin Mask (1936)
• The Telephone in the Library (1936)
• Glory Hand (1937)
• McGovern's Obsession (1937)
• The Panelled Room (1937)
• The Shuttered House (1937)
• The Wind from the River (1937)
• Three Gentlemen in Black (1938)
• Logoda's Heads (1939)
• Mrs. Elting Does Her Part (1939)
• The Second Print (1939)
• The Return of Hastur (1939)
• After You, Mr. Henderson (1940)
• Bramwell's Guardian (1940)
• The Sandwin Compact (1940)
• "Come to Me!" (1941)
• Altimer's Amulet (1941)
• Beyond the Threshold (1941)
• Compliments of Spectro (1941)
• Ithaqua (1941)
• Here, Daemos! (1942)
• Lansing's Luxury (1942)
• Mrs. Corter Makes Up Her Mind (1942)
• Headlines for Tod Shayne (1942)
• Mr. Ames' Devil (1942)
• Baynter's Imp (1943)
• McElwin's Glass (1943)
• No Light for Uncle Henry (1943)
• A Thin Gentleman with Gloves (1943)
• A Wig for Miss DeVore (1943)
• No Light for Uncle Henry (1943)
• The Dweller in Darkness (1944)
• Lady Macbeth of Pimley Square (1944)
• Pacific 421 (1944)
• The Trail of Cthulhu (also as The House on Curwen Street) (1944)
• Carousel (1945)
• The God-Box (1945)
• The Inverness Cape (1945)
• The Lost Day (1945)
• Mrs. Lannisfree (1945)
• The Watcher from the Sky (1945)
• A Collector of Stones (1946)
• Pikeman (1946)
• A Little Knowledge (1948)
• The Lonesome Place (1948)
• Saunder's Little Friend (1948)
• Something in Wood (1948)
• The Whippoorwills in the Hills (1948)
• Kingsridge 214 (1949)
• The Slayers and the Slain (1949)
• The Testament of Claiborne Boyd (also as The Gorge Beyond Salapunco) (1949)
• Twilight Play (1949)
• The Closing Door (1950)
• The Fifth Child (1950)
• The Island Out of Space (1950)
• The Ormolu Clock (1950)
• Potts' Triumph (1950)
• A Room in a House (1950)
• The Keeper of the Key (1951)
• A Knocking in the Wall (1951)
• The Man Who Rode the Saucer (1951)
• The Other Side of the Wall (1951)
• Something from Out There (1951)
• "Who Shall I Say is Calling?" (1952)
• The Black Island (1952)
• The Lost Path (1952)
• McIlvaine's Star (1952)
• The Night Road (1952)
• The Place of Desolation (1952)
• "Sexton, Sexton, in the Wall" (1953)
• Century Jumper (1953)
• A Corner for Lucia (1953)
• The Detective and the Senator (1953)
• The Disc Recorder (1953)
• The Ebony Stick (1953)
• The House in the Valley (1953)
• Invaders from the Microcosm (1953)
• The Maugham Obsession (1953)
• A Traveler in Time (1953)
• Mark VII (1954)
• The Mechanical House (1954)
• The Penfield Misadventure (1954)
• The Place in the Woods (1954)
• The Remarkable Dingdong (1954)
• Thinker, Mark VII (1954)
• The Dark Boy (1956)
• The Martian Artifact (1957)
• The Seal of R'lyeh (1957)
• Halloween for Mr. Faulkner (1959)
• Lovecraft and "The Pacer" (excerpt) (1959)
• The Adventure of the Intarsia Box (1964)
• By Rocket to the Moon (1965)
• Ferguson's Capsules (1966)
• The Adventure of the Unique Dickensians (1968)
• An Eye for History (1975)
• Protoplasma (1975)

• Hawk on the Wind (1938)
• Man Track Here (1939)
• Here on a Darkling Plain (1940)
• Wind in the Elms (1941)
• Rind of Earth (1942)
• And You, Thoreau! (1944)
• Selected Poems (1944)
• The Edge of Night (1945)
• Habitant of Dusk (1946)
• A Boy's Way (1947) (Illustrated by Claire Victor Dwiggins)
• It's a Boy's World (1948)
• Rendezvous in a Landscape (1952)
• Psyche (1953)
• Country Poems (1956)
• West of Morning (1960)
• This Wound (1962)

• Regional Writing, The Writer, July 1944
• Horror Fiction, The Writer, May 1945
• Introduction (The Mask of Cthulhu) (unknown)
• Foreword (Who Knocks?) (1946)
• Foreword (The Night Side) (1947)
• Introduction (The Sleeping and the Dead) (1947)
• Foreword (Not Long for This World) (1948)
• Introduction (Strange Ports of Call) (1948)
• Introduction (The Other Side of the Moon) (1949)
• Introduction (Beyond Time and Space) (1950)
• Foreword (The Outer Reaches) (1951)
• Introduction (The Haunter of the Dark) (1951)
• Introduction (Beachheads in Space) (1952)
• Introduction (Worlds of Tomorrow) (1953)
• Foreword (Time to Come) (1954)
• Introduction (Beachheads in Space) (1954)
• Introduction (Portals of Tomorrow) (1954)
• Introduction (Worlds of Tomorrow) (1955)
• Foreword (Dark Mind, Dark Heart) (1962)
• Foreword (Time to Come) (1963)
• H.P. Lovecraft And His Work (1963)
• Introduction (Mr. George and Other Odd Persons) (1963)
• Introduction (Worlds of Tomorrow) (1963)
• Introduction (Beachheads in Space) (1964)
• Introduction (From Other Worlds) (1964)
• Foreword (The Night Side) (1966)
• Foreword (The Unspeakable People) (1969)
• Clark Ashton Smith: Master of Fantasy (1974) with Donald Wandrei

• Poetry Out of Wisconsin (1937)
• Sleep No More (1944)
• Who Knocks? (1946)
• The Night Side (1947)
• The Sleeping and the Dead (1947)
• Strange Ports of Call (1948)
• The Other Side of the Moon (1949)
• Beyond Time and Space (1950)
• Far Boundaries (1951)
• The Outer Reaches (1951)
• Beachheads in Space (1952)
• Night's Yawning Peal: A Ghostly Company (1952)
• Worlds of Tomorrow (1953)
• Portals of Tomorrow (1954)
• Time to Come (1954)
• Dark Mind, Dark Heart (1962)
• New Worlds for Old (1963)
• The Sleeping and the Dead (abridged) (1963)
• The Time of Infinity (1963)
• The Unquiet Grave (1963)
• When Evil Wakes (1963)
• From Other Worlds (1964)
• Over the Edge (1964)
• Travellers by Night (1967)
• Tales of the Cthulhu Mythos (1969)
• Dark Things (1971)
• New Horizons: Yesterday's Portraits of Tomorrow (1998)

• The Drifting Snow (1939)
• A Gentleman from Prague (1944)
• Alannah (1945)
• Dead Man's Shoes (1946)
• Bishop's Gambit (1947)
• The Extra Passenger (1947)
• The Ghost Walk (1947)
• Mr. George (1947)
• Parrington's Pool (1947)
• Blessed Are the Meek (1948)
• Mara (1948)
• The Night Train to Lost Valley (1948)
• The Tsantsa in the Parlor (1948)
• The Wind in the Lilacs (1948)
• The Blue Spectacles (1949)
• Mrs. Manifold (1949)
• Open, Sesame! (1949)
• The Song of the Pewee (1949)
• The Man on B-17 (1950)
• Balu (1949)
• Miss Esperson (1962)

• The Lurker at the Threshold (1945)
• The Survivor (1954)
• Wentworth's Day (1957)
• The Gable Window (1957)
• The Shadow Out of Space (1957)
• The Ancestor (1957)
• The Lamp of Alhazred (1957)
• The Peabody Heritage (1957)
• The Shuttered Room (1959)
• The Dark Brotherhood (1966)
• The Horror from the Middle Span (1967)
• Innsmouth Clay (1971)
• The Watchers Out of Time (1974) (unfinished)

• The Elixir of Life (1926)
• The Marmoset (1926)
• The Black Castle (1927)
• The Owl on the Moor (1928)
• Riders in the Sky (1928)
• The Pacer (1930)
• In the Left Wing (1932)
• The Lair of the Star-Spawn (1932)
• Laughter in the Night (1932)
• Red Hands (1932)
• The Carven Image (1933)
• The Return of Andrew Bentley (1933)
• Colonel Markesan (1934)
• A Matter of Faith (1934)
• Death Holds the Post (1936)
• They Shall Rise (1936)
• The Woman at Loon Point (1936)
• Spawn of the Maelstrom (1939)
• The Vengeance of Ai (1939)
• The Occupant of the Crypt (1947)
• The Figure with the Scythe (1973)