I'm listing these as aBooks (audio), eBooks (elecronic, various formats) and pBook (paper, various sizes). In some cases you'll see more than one format listed, this is usually where I have both the electronic and audio formats and they can be synchronized. In many cases, I have both the eBook and the pBook, but you can't synchronize those two!
In the Current Reads folder of my Kindle, on the nightstand in paper form, on the magazine or comics racks (current as of June 9, 2019):
Active Reads: Alastair Reynolds—Beyond the Aquila Rift (eBook); David Weber—Flag in Exile (eBook); John McPhee—In Suspect Terrain (aBook); Nate Silver—The Signal and the Noise (eBook and aBook). Michael Benson—Space Odyssey (eBook and aBook).
Douglas Adams and Gareth Roberts: Doctor Who—Shada (eBook).
Brian Aldiss: Hell's Cartographers (eBook).
Darren Anderson: Imaginary Cities (eBook).
Poul Anderson: The Star Fox (eBook). Tau Zero (eBook). The Complete Psychoechnic League 01 (eBook). Harvest of Stars 01—Harvest of Stars (eBook). Fire Time (eBook). Brain Wave (eBook).
Isaac Asimov: Foundation 02—Foundation and Empire (eBook). Foundation 03—Second Foundation (eBook).
Isaac Asimov (editor): The Hugo Winners Volumes 01 and 02 Omnibus (pBook).
William Atheling (James Blish): The Issue at Hand (eBook).
Rick Atkinson: The Liberation Trilogy 01—An Army at Dawn (eBook and aBook).
Iain M. Banks: Culture 01—Consider Phlebas (aBook). Culture 02—Use of Weapons (aBook).
Luke Barr: Provence, 1970 (eBook).
Stephen Baxter: Xeelee Omnibus (pBook). Vacuum Diagrams (eBook).
Stephen Baxter and Alastair Reynolds: The Medusa Chronicles (eBook and aBook).
Elizabeth Bear: Ancestral Night (eBook) (link).
Greg Bear: Quantico 01—Quantico (eBook). Quantico 02—Mariposa (eBook).
Gregory Benford: Anomalies (eBook). The Stars in Shroud (eBook). Against Infinity (eBook). Galactic Center 00—A Hunger for the Infinite (aBook). Galactic Center 01—In the Ocean of Night (aBook). Galactic Center 02—Across the Sea of Suns (aBook). Galactic Center 03—Great Sky River (aBook). Galactic Center 04—Tides of Light (aBook). Galactic Center 05—Furious Gulf (aBook). Galactic Center 06—Sailing Bright Eternity (aBook).
Gregory Benford and Gordon Eklund: If the Stars are Gods (eBook).
Robert Jackson Bennett: American Elsewhere (eBook). Vigilance (eBook).
Michael Benson: Space Odyssey (eBook).
Carl Bernstein and Bob Woodward: All the President's Men (eBook).
Stephen Blackmoore: Eric Carter 01—Dead Things (eBook).
James Blish: Cities in Flight Omnibus: They Shall Have Stars; A Life for the Stars; Earthman, Come Home; The Triumph of Time (eBook).
Larry Bond: Red Phoenix (eBook). The Jerry Mitchell Series Omnibus: Dangerous Ground; Cold Choices; Eit Plan; Shattered Tridnt; Fatal Thunder (eBook).
Jose Luis Borges: Ficciones (eBook). Collected Fictions (pBook).
Anthony Bourdain, Andrew Zimmern and Mark Kurlansky: A Movable Feast (eBook).
Ben Bova and Les Johnson: Rescue Mode (eBook).
Mark Bowden: Hue 1968 (eBook).
Terry Brooks: The Sword of Shannara Trilogy (eBook).
Fredric Brown: The Lights in the Sky are Stars (eBook).
John Brunner: Stand on Zanzibar (eBook and aBook). The Sheep Look Up (aBook).
Lois McMaster Bujold: The Vorkosigan Saga 03—The Warrior's Apprentice (aBook).
Karen Burnham: Greg Egan (eBook).
Robert Burnham: Burnham's Celestial Handbook Volume 01 (eBook). Burnham's Celestial Handbook Volume 02 (eBook). Burnham's Celestial Handbook Volume 03 (eBook).
Ingrid Burrington: Networks of New York—An Illustrated Field Guide to Urban Internet Infrastructure (eBook).
James Branch Cabell: Figures of Earth (aBook).
David Byrne: How Music Works (eBook).
Pat Cadigan: Synners (eBook).
Julius Caesar: The Conquest of Gaul (eBook).
John W. Campbell, Jr.: The Planeteers (eBook). Cloak of Aesir (eBook).
Rebecca Campbell: The High Lonesome Frontier (eBook).
Rajiv Chandrasekaran: Imperial Life in the Emerald City (eBook).
C.J. Cherryh: Company Wars 01—Downbelow Station (eBook and aBook). The Hinder Stars 01—Alliance Rising (eBook).
G.K. Chesterton: The Man Who Was Thursday (eBook).
Ted Chiang: Stories of Your Life and Others (eBook).
Tom Clancy: Jack Ryan 01—Patriot Games (eBook). Jack Ryan 03—The Hunt for Red October (aBook).
Arthur C. Clarke: 2001—A Space Odyssey (eBook and aBook). The Lost Worlds of 2001 (eBook).
Hal Clement: Still River (eBook). Small Changes (eBook). Needle 01—Needle (eBook). Needle 02—Through the Eye of the Needle (eBook). Hot Planet (eBook). Cycle of Fire (eBook and eBook). Heavy Planet Omnibus: Mission of Gravity; Star Light; associated short stories (eBook). Iceworld (eBook).
Michael Cobley: Splintered Suns (eBook).
J.D. Coleman: Air–Cav—History of the 1st Cavalry Division in Vietnam, 1965–1969 (eBook).
Myke Cole: The Armored Saint (eBook).
Glen Cook: Dread Brass Shadows (eBook).
James S.A. Corey:
Dante: Circles of Hell (eBook).
Geeta Dayal: 33 1/3—Another Green World (eBook).
Samuel R. Delany: Dhalgren (eBook and aBook). The Atheist in the Attic (eBook). About Writing (eBook). In Search of Silence (eBook). Trouble on Triton (eBook). Babel-17 (aBook).
Lester Del Rey: Nerves (eBook).
John M. Del Vecchio: The Vietnam Trilogy: The 13th Valley; For the Sake of All Living Things; Carry Me Home (eBook and aBook for first volume only).
Gordon R. Dickson: Lost Dorsai (eBooks). Soldier, Ask Not (eBook). The Final Encyclopedia (eBook).
Stephen Donaldson: The Chronicles of Thomas Covenant the Unbeliever 01—Lord Foul's Bane (eBook).
Gardner Dozois (editor): The Year's Best Science Fiction—First Annual Collection (eBook). The Year's Best Science Fiction—Thirty–Third Annual Collection (eBook). The Year's Best Science Fiction—Thirty-Fourth Annual Collection (eBook). The Year's Best Science Fiction—Thirty–Fifth Annual Collection (eBook).
Steven Drobny: The Invisible Hands—Top Hedge Fund Traders on Bubbles, Crashes, and Real Money (eBook).
Alexandre Dumas: The Three Musketeers (aBook, eBook and pBook).
Mike Duncan: The Storm Before the Storm (eBook).
James F. Dunnigan: Wargames Handbook (eBook).
James F. Dunnigan and Albert A. Nofi: Dirty Little Secrets of the Vietnam War (eBook).
George Alec Effinger: The Budayeen Cycle Omnibus:
Greg Egan: The Nearest (short story) (eBook).
Paul Elie: Reinventing Bach (eBook).
Warren Ellis: Brave New Now (eBook).
Harlan Ellison: Ellison Wonderland (eBook). Can & Can'tankerous (eBook). Under the Volcano (eBook). The Essential Ellison (pBook).
Harlan Ellison (editor): Dangerous Visions (eBook). Again, Dangerous Visions (eBook).
Donald Fagen: Eminent Hipsters (eBook).
Eric Flint (editor): Ring of Fire (eBook). Grantville Gazette Volume 01 (eBook). Grantville Gazette Issue 01 (eBook).
Jeffrey Ford: The Twilight Pariah (eBook).
Bob Forrest–Webb: Chieftains (eBook).
Kenneth F. Gantz: Not in Solitude (eBook).
Henry Gee (editor): Nature Futures 01 (eBook). Nature Futures 02 (eBook).
Terry Gilliam: Gilliamesue—A Pre-Posthumous Memoir (eBook).
Alexis A. Gilliland:
Graham Greene: The Quiet American (eBook).
Kerry Greenwood: Phryne Fisher 01—Cocaine Blues (eBook).
Heinz Guderian: Panzer Leader (eBook).
James Gunn: Star–Begotten—A Life Lived in Science Fiction (eBook). The Listeners (eBook).
Joe Haldeman: Worlds 01—Worlds (eBook). Worlds 02—Worlds Apart (eBook). Worlds 03—Worlds Enough and Time (eBook). All My Sins Remembered (eBook). Mindbridge (eBook).
Peter F. Hamilton: Salvation (eBook). The Night's Dawn 01—The Reality Dysfunction (eBook and aBook).
David G. Hartwell (editor): Year's Best Science Fiction 01—The Year's Best SF (eBook).
Robert A. Heinlein: The Star Beast (eBook). Time for the Stars (eBook). Destination Moon and Shooting Destination Moon (eBook).
Frank Herbert: Dune 01—Dune (eBook and aBook).
Herodotus and Tom Holland (translator): The Histories (eBook) (link).
Mick Herron: Slough House 01—Slow Horses (eBook) (link).
Thor Heyerdahl: Kon-Tiki (eBook) (link).
William Hope Hodgson: The Collection Fiction 01—Boats of Glen Carrig & Other Nautical Stories (eBook).
Homer & Robert Fagles (translator): The Iliad (eBook). The Odyssey (eBook).
Douglas R. Hofstadter: Metamagical Themas (eBook).
Robert E. Howard: The Bloody Crown of Conan (eBook).
M.R. James: Count Magnus and Other Ghost Stories (eBook).
Marlon James: Black Leopard Red Wolf (eBook).
Lesley–Ann Jones: Mercury—An Intimate Biography of Freddie Mercury (eBook).
Raymond F. Jones: This Island Earth (eBook).
Donald Kagan: New History of the Peloponnesian War Omnibus (eBook and pBook). The Peloponnesian War (aBook and pBook).
Stanley Karnow: Vietnam—A History (aBook and pBook).
John Keegan: The First World War (eBook).
David Keener (editor): Worlds Enough—Fantastic Defenders (eBook).
Caitlin R Kiernan: Agents of Dreamland (eBook).
Paul Kincaid: Iain M. Banks (eBook).
Stephen King: Danse Macabre (eBook and aBook). On Writing (eBook and aBook).
Damon Knight: In Search of Wonder (eBook).
Mary Robinette Kowal: The Calculating Stars (eBook). The Fated Sky (eBook). The Lady Astronaut of Mars (short story) (eBook).
Jacqueline Koyanagi: Ascension (eBook).
Volker Kutscher: Babylon Berlin (eBook).
Jay Lake: The Specific Gravity of Grief (eBook).
Mark Langthorne: Somebody to Love—The Life, Death and Legacy of Freddie Mercury (eBook).
Michael Lee Lanning: Tours of Duty—Vietnam War Stories (eBook).
Rich Larson: Meat and Salt and Sparks (eBook).
Robin D. Laws: Hamlet's Hit Points (eBook).
John LeCarre: A Small Town in Germany (eBook).
Ann Leckie: Ancillary Justice (eBook).
Yoon Ha Lee: Ninefox Gambit (eBook).
Fritz Leiber: Smoke Ghost (eBook). Fafhrd and the Grey Mouser 02—Swords Against Death (eBook). The Ghost Light (aBook).
Ursula K. LeGuin: The Ones Who Walk Away from the Omelas (short story) (eBook).
Madeline L'Engle: A Wrinkle in Time (eBook).
Michael Lewis: Flash Boys (eBook). The Big Short (eBook).
Brian Lumley: The Burrowers Beneath (eBook). The Transition of Titus Crow (eBook).
John D. MacDonald: Travis McGee 01—The Deep Blue Good-Bye (eBook).
Sir Thomas Mallory and Peter Ackroyd (translator): The Death of King Arthur (eBook).
Sir Thomas Mallory and John Steinbeck: The Acts of King Arthur and His Noble Knights (eBook).
Barry N. Malzberg: Breakfast in the Ruins (eBook).
George R. R. Martin: Night-Flyers and Other Stories (eBook).
Michael J. Martinez: MJ-12—Shadows (eBook) (link).
Tim Maughan: Infinite Detail (eBook) (link).
Hope Mirrlees: Lud-in-the-Mist (eBook).
Michael Moorcock: Elric—Stealer of Souls (eBook). London Peculiar and Other Nonfiction (eBook).
Alan Moore & Others: Spirits of Place (eBook).
Harold G. Moore: We Were Soldiers Once...And Young (eBook).
Richard K. Morgan: Takeshi Kovacs 01—Altered Carbon (eBook).
Andy Murray: Into the Unknown—The Fantastic Life of Nigel Kneale (eBook).
Ramez Naam: Nexus 01—Nexus (eBook).
Annalee Newitz: Autonomous (eBook).
Alan E. Nourse: Raiders from the Rings (eBook).
Patrick O'Brian: Aubrey–Maturin 01—Master and Commander (eBook and aBook).
Tim O'Brien: The Things They Carried (eBook).
Malka Older: Centenal Cycle 01—Infomocracy (eBook). Centenal Cycle 02—Null States (eBook). Centenal Cycle 03—State Tectonics (eBook).
(The) Open University: The Library of Alexandria (eBook).
Peter Perla: The Art of Wargaming (eBook).
Ellis Peters: Cadfael 00—A Rare Benedictine (eBook). Cadfael 01—A Morbid Taste for Bones (eBook).
Gareth L. Powell: Embers of War (eBook).
Tim Powers: Alternate Routes (eBook and aBook). Medusa's Web (eBook). Declare (aBook). Last Call (aBook). The Anubis Gates (aBook). More Walls Broken (eBook) (link).
Terry Pratchett: Unseen Academicals (eBook).
Terry Pratchett & Neil Gaiman:
Thomas Pynchon: Gravity's Rainbow (eBook and aBook). The Crying of Lot 49 (aBook).
Hannu Rajaniemi: Jean le Flambeur 01—The Quantum Thief (eBook).
Alastair Reynolds: Slow Bullets (eBook and aBook). Beyond the Aquila Rift (eBook). Deep Navigation (eBook). Revenger (aBook). Beyond the Aquila Rift (short story) (aBook). Troika (aBook). Poseidon's Children 01—Blue Remembered Earth (aBook). Poseidon's Children 02—On the Steel Breeze (aBook). Poseidon's Children 03—Poseidon's Wake (aBook). The Prefect 01—Elysium Fire (aBook). Revelation Space 00—Galactic North (aBook). Revelation Space 00—Diamond Dogs, Turquoise Days (aBook). Revelation Space 01—Revelation Space (aBook). Revelation Space 02—Chasm City (aBook). Revelation Space 03—Redemption Ark (aBook). Revelation Space 04—Absolution Gap (aBook). Terminal World (aBook). House of Suns (aBook). Pushing Ice (aBook). Century Rain (aBook).
John Ringo: Live Free or Die (eBook).
Kim Stanley Robinson: Forty Signs of Rain (eBook and aBook). Escape from Kathmandu (eBook). Fifty Degrees Below (eBook). Sixty Days and Counting (eBook). Mars 01—Red Mars (Book).
Spider Robinson and Jeanne Robinson: Stardance (short story) (eBook).
Paul M. Sammon: Future Noir—The Making of Blade Runner (eBook).
David E. Sanger: The Perfect Weapon (eBook).
Patricia Sexton: Live from Mongolia—From Wall Street Banker to Mongolian News Anchor (eBook).
William Shakespeare: Hamlet (eBook). A Midsummer Night's Dream (eBook).
Nisi Shawl and Bill Campbell: Stories for Chip: A Tribute to Samuel R. Delany (eBook).
Nate Silver: The Signal and the Noise (eBook and aBook).
Robert Silverberg: To Be Continued (eBook).
Robert Silverberg (editor): The Science Fiction Hall of Fame Volume 01 (eBook).
Clifford D. Simak:
P.W. Singer & August Cole: Ghost Fleet (eBook).
Robin Sloan: Sourdough (eBook).
Clark Ashton Smith: The Collected Fantasies 01—The End of the Story (eBook and aBook).
Sherwood Smith and Dave Trowbridge: Exordium 01—The Phoenix in Flight (eBook and aBook).
Greg Stafford: King of Sartar (eBook).
Olaf Stapledon: Star Maker (eBook and aBook).
John Steinbeck: Travels with Charley in Search of America (eBook).
Neal Stephenson: Reamde (eBook and aBook). Snow Crash (eBook). The Diamond Age (eBook).
Mary Stewart: Legacy Omnibus: Crystal Cave; The Hollow Hills; The Last Enchantment; The Wicked Day (eBook).
Bram Stoker: Dracula Unredacted (eBook).
Jonathan Strahan (editor): The Best Science Fiction of the Year 01 (eBook). The Best Science Fiction of the Year 11 (eBook). Eclipse 01 (eBook). The Best Science Fiction of the Year 12 (eBook).
Ted Sturgeon: The Ultimate Egoist (eBook).
Michael Swanwick: Not So Much Said the Cat (eBook).
Thucydides: The Landmark Thucydides (eBook).
Lavie Tidhar: Central Station (eBook).
E.C. Tubb: Dumarest 02—Derai (eBook). Dumarest 03—Toyman (eBook).
Barbara Tuchman: The Guns of August (eBook).
Unknown: Beowulf (eBook).
Jack Vance: Demon Princes Omnibus: The Star King; The Killing Machine; The Palace of Love; The Face; The Book of Dreams (eBook). Tales of the Dying Earth Omnibus:
Brian VanDeMark: Road to Disaster (eBook).
Jeff VanderMeer: Wonderbook (eBook).
A.E. van Vogt: The War Against the Rull (eBook). The Voyage of the Space Beagle (eBook). The World of Null-A (eBook). The House That Stood Still (eBook). Slan (eBook).
John Varley: The Ophiuchi Hotline (eBook).
Various: New American Bible, Revised Edition (eBook).
Vernor Vinge: Zones of Thought 02—A Fire Upon the Deep (aBook).
Vernor Vinge and Jim Frankel (editor): True Names and the Opening of the Cyberspace Frontier (eBook).
Matt Wallace: Sin du Jour—The First Course (eBook).
Evangeline Walton: The Mabinogion Tetraology: The Island of the Mighty; The Children of Llyr; The Song of Rhiannon; Prince of Annwn (eBook).
Jo Walton: An Informal History of the Hugos (eBook).
David Weber and Eric Flint: 1633 (eBook and aBook).
Edward Whittemore: The Jerusalem Quartet; Sinai Tapestry; Jerusalem Poker; Nile Shadows; Jericho Mosaic (eBook).
Hugo Wilcken: 33 1/3—Low (eBook).
(The) Wild Card Trust: Wild Cards 01 (eBook).
Kate Wilhelm: Storyteller (eBook).
Tad Williams: Memory Sorrow Thorn 01—The Dragonbone Chair (eBook). Memory Sorrow Thorn 02—Stone of Farewell (eBook). Memory Sorrow Thorn 03a—To Green Angel Tower, Part 01 (eBook). Memory Sorrow Thorn 03b—To Green Angel Tower, Part 02 (eBook).
Walter Jon Williams: Hardwired 01—Hardwired (eBook).
H.P. Willmot: Empires in the Balance—Japanese and Allied Pacific Strategies to April 1942 (eBook) (link). The Battle of Leyte Gulf—The Last Fleet Action (eBook) (link).
Loren Wiseman (author) and Marc W. Miller (editor):
Gary K. Wolfe: How Great Science Fiction Works (aBook).
Gene Wolfe: The Fifth Head of Cerberus (eBook). The Shadow of the Torturer (pBook, eBook and aBook). Endangered Species (eBook).
Bob Woodward: Fear (eBook).
Roger Zelazny: Seven Tales in Amber (eBook). Lord of Light (eBook).
Joe Zieja: Epic Failure 01—Mechanical Failure (eBook).