| 1940: Fiction |
 | 1 | How Green Was My Valley | Llewellyn, Richard |
| | 2 | Kitty Foyle | Morley, Christopher |
| | 3 | Mrs. Miniver | Struther, Jan |
 | 4 | For Whom the Bell Tolls | Hemingway, Ernest |
 | 5 | The Nazarene | Asch, Sholem |
| | 6 | Stars on the Sea | Mason, F. van Wyck |
| | 7 | Oliver Wiswell | Roberts, Kenneth |
 | 8 | The Grapes of Wrath | Steinbeck, John |
 | 9 | Night in Bombay | Bromfield, Louis |
| | 10 | The Family | Fedorova, Nina |
| 1940: Non-Fiction |
| | 1 | I Married Adventure | Johnson, Osa |
| | 2 | How to Read a Book | Adler, Mortimer |
| | 3 | A Smattering of Ignorance | Levant, Oscar |
| | 4 | Country Squire in the White House | Flynn, John T. |
| | 5 | Land Below the Wind | Keith, Agnes Newton |
| | 6 | American White Paper | Alsop, Joseph W.,Jr. and Robert Kintnor |
| | 7 | New England: Indian Summer | Brooks, Van Wyck |
| | 8 | As I Remember Him | Zinsser, Hans |
| | 9 | Days of Our Years | van Paassen, Pierre |
| | 10 | Bet It's a Boy | Blunt, Betty B. |
| 1941: Fiction |
| | 1 | The Keys of the Kingdom | Cronin, A. J. |
| | 2 | Random Harvest | Hilton, James |
| | 3 | This Above All | Knight, Eric |
| | 4 | The Sun Is My Undoing | Steen, Marguerite |
 | 5 | For Whom the Bell Tolls | Hemingway, Ernest |
| | 6 | Oliver Wiswell | Roberts, Kenneth |
| | 7 | H. M. Pulham, Esquire | Marquand, John P. |
| | 8 | Mr. and Mrs. Cugat | Rorick, Isabel Scott |
 | 9 | Saratoga Trunk | Ferber, Edna |
 | 10 | Windswept | Chase, Mary Ellen |
| 1941: Non-Fiction |
| | 1 | Berlin Diary | Shirer, William L. |
| | 2 | The White Cliffs | Miller, Alice Duer |
| | 3 | Out of the Night | Valtin, Jan |
| | 4 | Inside Latin America | Gunther, John |
| | 5 | Blood, Sweat and Tears | Churchill, Winston S. |
| | 6 | You Can't Do Business with Hitler | Miller, Douglas |
| | 7 | Reading I've Liked | Fadiman, Clifton, editor |
| | 8 | Reveille in Washington | Leech, Margaret |
| | 9 | Exit Laughing | Cobb, Irvin S. |
| | 10 | My Sister and I | van der Heide, Dirk |
| 1942: Fiction |
| | 1 | The Song of Bernadette | Werfel, Franz |
 | 2 | The Moon Is Down | Steinbeck, John |
| | 3 | Dragon Seed | Buck, Pearl S. |
| | 4 | And Now Tomorrow | Field, Rachel |
| | 5 | Drivin' Woman | Pickett, Elizabeth |
 | 6 | Windswept | Chase, Mary Ellen |
 | 7 | The Robe | Douglas, Lloyd C. |
| | 8 | The Sun Is My Undoing | Steen, Marguerite |
| | 9 | Kings Row | Bellamann, Henry |
| | 10 | The Keys of the Kingdom | Cronin, A. J. |
| 1942: Non-Fiction |
| | 1 | See Here, Private Hargrove | Hargrove, Marion |
| | 2 | Mission to Moscow | Davies, Joseph E. |
| | 3 | The Last Time I Saw Paris | Paul, Elliot |
| | 4 | Cross Creek | Rawlings, Marjorie Kinnan |
| | 5 | Victory Through Air Power | de Seversky, Major Alexander P. |
| | 6 | Past Imperfect | Chase, Ilka |
| | 7 | They Were Expendable | White, W. L. |
| | 8 | Flight to Arras | de St. Exupery, Antoine |
| | 9 | Washington Is Like That | Kiplinger, W. M. |
| | 10 | Inside Latin America | Gunther, John |
| 1943: Fiction |
 | 1 | The Robe | Douglas, Lloyd C. |
| | 2 | The Valley of Decision | Davenport, Marcia |
| | 3 | So Little Time | Marquand, John P. |
 | 4 | A Tree Grows in Brooklyn | Smith, Betty |
| | 5 | The Human Comedy | Saroyan, William |
| | 6 | Mrs. Parkington | Bromfield, Louis |
| | 7 | The Apostle | Asch, Sholem |
| | 8 | Hungry Hill | du Maurier, Daphne |
| | 9 | The Forest and the Fort | Allen, Hervey |
| | 10 | The Song of Bernadette | Werfel, Franz |
| 1943: Non-Fiction |
| | 1 | Under Cover | Carlson, John Roy |
| | 2 | One World | Willkie, Wendell L. |
| | 3 | Journey Among Warriors | Curie, Eve |
| | 4 | On Being a Real Person | Fosdick, Harry Emerson |
| | 5 | Guadalcanal Diary | Tregaskis, Richard |
| | 6 | Burma Surgeon | Seagrave, Lt. Col. Gordon |
| | 7 | Our Hearts Were Young and Gay | Skinner, Cornelia Otis and Emily Kimbrough |
| | 8 | U. S. Foreign Policy | Lippmann, Walter |
| | 9 | Here Is Your War | Pyle, Ernie |
| | 10 | See Here, Private Hargrove | Hargrove, Marion |
| 1944: Fiction |
 | 1 | Strange Fruit | Smith, Lillian |
 | 2 | The Robe | Douglas, Lloyd C. |
 | 3 | A Tree Grows in Brooklyn | Smith, Betty |
 | 4 | Forever Amber | Winsor, Kathleen |
 | 5 | The Razor's Edge | Maugham, W. Somerset |
| | 6 | The Green Years | Cronin, A. J. |
| | 7 | Leave Her to Heaven | Williams, Ben Ames |
 | 8 | Green Dolphin Street | Goudge, Elizabeth |
 | 9 | A Bell for Adano | Hersey, John |
| | 10 | The Apostle | Asch, Sholem |
| 1944: Non-Fiction |
| | 1 | I Never Left Home | Hope, Bob |
| | 2 | Brave Men | Pyle, Ernie |
| | 3 | Good Night, Sweet Prince | Fowler, Gene |
| | 4 | Under Cover | Carlson, John Roy |
| | 5 | Yankee from Olympus | Bowen, Catherine Drinker |
| | 6 | The Time for Decision | Welles, Sumner |
| | 7 | Here Is Your War | Pyle, Ernie |
| | 8 | Anna and the King of Siam | Landon, Margaret |
| | 9 | The Curtain Rises | Reynolds, Quentin |
| | 10 | Ten Years in Japan | Grew, Joseph C. |
| 1945: Fiction |
 | 1 | Forever Amber | Winsor, Kathleen |
 | 2 | The Robe | Douglas, Lloyd C. |
 | 3 | The Black Rose | Costain, Thomas B. |
| | 4 | The White Tower | Ullman, James Ramsey |
| | 5 | Cass Timberlane | Lewis, Sinclair |
| | 6 | A Lion Is in the Streets | Langley, Adria Locke |
| | 7 | So Well Remembered | Hilton, James |
| | 8 | Captain from Castile | Shellabarger, Samuel |
| | 9 | Earth and High Heaven | Graham, Gwethalyn |
| | 10 | Immortal Wife | Stone, Irving |
| 1945: Non-Fiction |
| | 1 | Brave Men | Pyle, Ernie |
| | 2 | Dear Sir | Lowell, Juliet |
| | 3 | Up Front | Mauldin, Bill |
| | 4 | Black Boy | Wright, Richard |
| | 5 | Try and Stop Me | Cerf, Bennett |
| | 6 | Anything Can Happen | Papashvily, George and Helen |
| | 7 | General Marshall's Report | U.S. War Department General Staff |
| | 8 | The Egg and I | MacDonald, Betty |
| | 9 | The Thurber Carnival | Thurber, James |
| | 10 | Pleasant Valley | Bromfield, Louis |
| 1946: Fiction |
| | 1 | The King's General | du Maurier, Daphne |
| | 2 | This Side of Innocence | Caldwell, Taylor |
| | 3 | The River Road | Keyes, Frances Parkinson |
| | 4 | The Miracle of the Bells | Janney, Russell |
| | 5 | The Hucksters | Wakeman, Frederic |
| | 6 | The Foxes of Harrow | Yerby, Frank |
| | 7 | Arch of Triumph | Remarque, Erich Maria |
 | 8 | The Black Rose | Costain, Thomas B. |
| | 9 | B. F.'s Daughter | Marquand, John P. |
| | 10 | The Snake Pit | Ward, Mary Jane |
| 1946: Non-Fiction |
| | 1 | The Egg and I | MacDonald, Betty |
| | 2 | Peace of Mind | Liebman, Joshua L. |
| | 3 | As He Saw It | Roosevelt, Elliott |
| | 4 | The Roosevelt I Knew | Perkins, Frances |
| | 5 | Last Chapter | Pyle, Ernie |
| | 6 | Starling of the White House | Thomas Sugrue and Col. Edmund Starling |
| | 7 | I Chose Freedom | Kravchenko, Victor |
| | 8 | The Anatomy of Peace | Reves, Emery |
| | 9 | Top Secret | Ingersoll, Ralph |
| | 10 | A Solo in Tom-Toms | Fowler, Gene |
| 1947: Fiction |
| | 1 | The Miracle of the Bells | Janney, Russell |
| | 2 | The Moneyman | Costain, Thomas B. |
 | 3 | Gentleman's Agreement | Hobson, Laura Z. |
| | 4 | Lydia Bailey | Roberts, Kenneth |
| | 5 | The Vixens | Yerby, Frank |
 | 6 | The Wayward Bus | Steinbeck, John |
| | 7 | House Divided | Williams, Ben Ames |
| | 8 | Kingsblood Royal | Lewis, Sinclair |
| | 9 | East Side, West Side | Marcia Davenport |
| | 10 | Prince of Foxes | Shellabarger, Samuel |
| 1947: Non-Fiction |
| | 1 | Peace of Mind | Liebman, Joshua L. |
| | 2 | Information Please Almanac, 1947 | Kieran, John, editor |
| | 3 | Inside U.S.A. | Gunther, John |
| | 4 | A Study of History | Toynbee, Arnold J. |
| | 5 | Speaking Frankly | Byrnes, James F. |
| | 6 | Human Destiny | du Noey, Pierre Lecomte |
| | 7 | The Egg and I | MacDonald, Betty |
| | 8 | The American Past | Butterfield, Roger |
| | 9 | The Fireside Book of Folk Songs | Boni, Margaret B., editor |
| | 10 | Together | Katharine T. Marshall |
| 1948: Fiction |
| | 1 | The Big Fisherman | Douglas, Lloyd C. |
 | 2 | The Naked and the Dead | Mailer, Norman |
| | 3 | Dinner at Antoine's | Keyes, Frances Parkinson |
| | 4 | The Bishop's Mantle | Turnbull, Agnes Sligh |
 | 5 | Tomorrow Will Be Better | Smith, Betty |
| | 6 | The Golden Hawk | Yerby, Frank |
| | 7 | Raintree County | Lockridge, Ross Jr. |
| | 8 | Shannon's Way | Cronin, A. J. |
| | 9 | Pilgrim's Inn | Goudge, Elizabeth |
| | 10 | The Young Lions | Shaw,Irwin |
| 1948: Non-Fiction |
| | 1 | Crusade in Europe | Eisenhower, Dwight D. |
| | 2 | How to Stop Worrying and Start Living | Carnegie, Dale |
| | 3 | Peace of Mind | Liebman, Joshua L. |
| | 4 | Sexual Behavior in the Human Male | Kinsey, A. C., et al. |
| | 5 | Wine, Women and Words | Rose, Billy |
| | 6 | The Life and Times of the Shmoo | Capp, Al |
| | 7 | The Gathering Storm | Churchill, Winston |
| | 8 | Roosevelt and Hopkins | Sherwood, Robert E. |
| | 9 | A Guide to Confident Living | Peale, Norman Vincent |
| | 10 | The Plague and I | MacDonald, Betty |
| 1949: Fiction |
 | 1 | The Egyptian | Waltari, Mika |
| | 2 | The Big Fisherman | Douglas, Lloyd C. |
| | 3 | Mary | Asch, Sholem |
| | 4 | A Rage to Live | O'Hara, John |
| | 5 | Point of No Return | Marquand, John P. |
| | 6 | Dinner at Antoine's | Keyes, Frances Parkinson |
| | 7 | High Towers | Costain, Thomas B. |
| | 8 | Cutlass Empire | Mason, Van Wyck |
| | 9 | Pride's Castle | Yerby, Frank |
 | 10 | Father of the Bride | Streeter, Edward |
| 1949: Non-Fiction |
| | 1 | White Collar Zoo | Barnes, Clare Jr. |
| | 2 | How to Win at Canasta | Jacoby, Oswald |
| | 3 | The Seven Storey Mountain | Merton, Thomas |
| | 4 | Home Sweet Zoo | Barnes,Clare Jr. |
| | 5 | Cheaper by the Dozen | Gilbreth, Frank B. Jr. and Ernestine Gilbreth Carey |
| | 6 | The Greatest Story Ever Told | Oursler, Fulton |
| | 7 | Canasta, the Argentine Rummy Game | Reilly, Ottilie H. |
| | 8 | Canasta | de Viel, Josephine Artayeta and Ralph Michael |
| | 9 | Peace of Soul | Sheen, Fulton J. |
| | 10 | A Guide to Confident Living | Peale, Norman Vincent |