| 2025 | Winner | How to Survive a Bear Attack | Claire Cameron | Unknown |
| 2025 | Finalist | All Our Ordinary Stories: A Multigenerational Family Odyssey | Teresa Wong | Unknown |
| 2025 | Finalist | Searching for Serafim: The Life and Legacy of Serafim “Joe” Fortes | Ruby Smith Dίaz | Unknown |
| 2025 | Finalist | The Migrant Rain Falls in Reverse | Vinh Nguyen | Unknown |
| 2025 | Finalist | What to Feel, How to Feel: Lyric Essays on Neurodivergence and Neurofatherhood | Shane Neilson | Unknown |
| 2024 | Winner | Wînipêk: Visions of Canada from an Indigenous Centre | Niigaan Sinclair | Unknown |
| 2024 | Finalist | Becoming a Matriarch | Helen Knott | Unknown |
| 2024 | Finalist | Crooked Teeth: A Queer Syrian Refugee Memoir | Danny Ramadan | Unknown |
| 2024 | Finalist | The Age of Insecurity: Coming Together as Things Fall Apart | Astra Taylor | Unknown |
| 2024 | Finalist | The Walls Have Eyes: Surviving Migration in the Age of Artificial Intelligence | Petra Molnar | Unknown |
| 2023 | Winner | Unearthing | Kyo Maclear | Unknown |
| 2023 | Finalist | Gendered Islamophobia: My Journey with a Scar(f) | Monia Mazigh | Unknown |
| 2023 | Finalist | Invisible Boy | Harrison Mooney | Unknown |
| 2023 | Finalist | Message in a Bottle | Holly Hogan | Unknown |
| 2023 | Finalist | Unbroken: My Fight for Survival, Hope, and Justice for Indigenous Women and Girls | Angela Sterritt | Unknown |
| 2022 | Winner | Aki-wayn-zih: A Person as Worthy as the Earth | Eli Baxter | Unknown |
| 2022 | Finalist | All the Frequent Troubles of Our Days: The True Story of the American Woman at the Heart of the German Resistance to Hitler | Rebecca Donner | Back Bay Books |
| 2022 | Finalist | Generation Dread: Finding Purpose in an Age of Climate Crisis | Britt Wray | Unknown |
| 2022 | Finalist | Persephoneʼs Children: A Life in Fragments | Rowan McCandless | Unknown |
| 2022 | Finalist | Rehearsals for Living | Robyn Maynard, Leanne Betasamosake Simpson | Unknown |
| 2021 | Winner | alfabet/alphabet: a memoir of a first language | Sadiqa de Meijer | Unknown |
| 2021 | Finalist | Care of: Letters, Connections, and Cures | Ivan Coyote | Unknown |
| 2021 | Finalist | Revery: A Year of Bees | Jenna Butler | Unknown |
| 2021 | Finalist | The Day the World Stops Shopping | J. B. MacKinnon | Unknown |
| 2021 | Finalist | What I Remember, What I Know: The Life of a High Arctic Exile | Larry Audlaluk | Unknown |
| 2020 | Winner | This Red Line Goes Straight to Your Heart | Madhur Anand | McClelland & Stewart |
| 2020 | Finalist | A History of My Brief Body | Billy-Ray Belcourt | Unknown |
| 2020 | Finalist | Disfigured: On Fairy Tales, Disability and Making Space | Amanda Leduc | Unknown |
| 2020 | Finalist | Rebent Sinner | Ivan Coyote | Unknown |
| 2020 | Finalist | Shame on Me: An Anatomy of Race and Belonging | Tessa McWatt | Unknown |
| 2019 | Winner | To the River: Losing My Brother | Don Gillmor | Unknown |
| 2019 | Finalist | City of Omens: A Search for the Missing Women of the Borderlands | Dan Werb | Bloomsbury |
| 2019 | Finalist | Fryderyk Chopin: A Life and Times | Alan Walker | Farrar, Straus and Giroux |
| 2019 | Finalist | Sea Trial: Sailing After My Father | Brian Harvey | Unknown |
| 2019 | Finalist | Tiny Lights for Travellers | Naomi K. Lewis | University of Alberta Press |
| 2018 | Winner | Mamaskatch: A Cree Coming of Age | Darrel J. McLeod | Milkweed Editions |
| 2018 | Finalist | Dead Reckoning: How I Came To Meet the Man Who Murdered My Father | Carys Cragg | Unknown |
| 2018 | Finalist | Heart Berries | Terese Marie Mailhot | Counterpoint |
| 2018 | Finalist | Homes: A Refugee Story | Abu Bakr Al-Rabeeah, Winnie Yeung | Unknown |
| 2018 | Finalist | The Wife’s Tale: A Personal History | Aida Edemariam | HarperCollins |
| 2017 | Winner | The Way of the Strangers: Encounters with the Islamic State | Graeme Wood | Allen Lane |
| 2017 | Finalist | All We Leave Behind: A Reporter's Journey into the Lives of Others | Carol Off | Unknown |
| 2017 | Finalist | The Handover: How Bigwigs and Bureaucrats Transferred Canada's Best Publisher and the Best Part of our Literary Heritage to a Foreign Multinational | Elaine Dewar | Unknown |
| 2017 | Finalist | Where I Live Now: A Journey through Love and Loss to Healing and Hope | Sharon Butala | Simon & Schuster |
| 2017 | Finalist | Where It Hurts | Sarah de Leeuw | Unknown |
| 2016 | Winner | A World We Have Lost: Saskatchewan Before 1905 | Bill Waiser | Unknown |
| 2016 | Finalist | Brown: What Being Brown in the World Today Means (To Everyone) | Kamal Al-Solaylee | Unknown |
| 2016 | Finalist | Firewater: How Alcohol is Killing My People (and Yours) | Harold R. Johnson | Unknown |
| 2016 | Finalist | In-Between Days: A Memoir about Living with Cancer | Teva Harrison | Unknown |
| 2016 | Finalist | Marconi: The Man Who Networked the World | Marc Raboy | Oxford University Press |
| 2015 | Winner | Bee Time: Lessons from the Hive | Mark L. Winston | Unknown |
| 2015 | Finalist | Dispatches from the Front: Matthew Halton, Canada's Voice at War | David Halton | Unknown |
| 2015 | Finalist | Norval Morrisseau: Man Changing into Thunderbird | Armand Garnet Ruffo | Unknown |
| 2015 | Finalist | Party of One: Stephen Harper and Canada's Radical Makeover | Michael Harris | Unknown |
| 2015 | Finalist | The Social Life of Ink: Culture, Wonder, and Our Relationship with the Written Word | Ted Bishop | Viking |
| 2014 | Winner | The End of Absence: Reclaiming What We’ve Lost in a World of Constant Connection | Michael Harris | HarperCollins |
| 2014 | Finalist | Know the Night: A Memoir of Survival in the Small Hours | Maria Mutch | Simon & Schuster |
| 2014 | Finalist | The Oil Man and the Sea: Navigating the Northern Gateway | Arno Kopecky | Unknown |
| 2014 | Finalist | Up Ghost River: A Chief’s Journey Through the Turbulent Waters of Native History | Edmund Metatawabin, Alexandra Shimo | Unknown |
| 2013 | Winner | Journey with No Maps: A Life of P.K. Page | Sandra Djwa | Unknown |
| 2013 | Finalist | Projection: Encounters with My Runaway Mother | Priscila Uppal | Unknown |
| 2013 | Finalist | The Idealist: Jeffrey Sachs and the Quest to End Poverty | Nina Munk | Unknown |
| 2013 | Finalist | The Juggler's Children: A Journey into Family, Legend and the Genes that Bind Us | Carolyn Abraham | Unknown |
| 2013 | Finalist | The Memory of Water | Allen Smutylo | Unknown |
| 2012 | Winner | Leonardo and the Last Supper | Ross King | Walker & Company |
| 2012 | Finalist | A Thousand Farewells: A Reporter's Journey from Refugee Camp to the Arab Spring | Nahlah Ayed | Viking |
| 2012 | Finalist | Into the Silence: The Great War, Mallory and the Conquest of Everest | Wade Davis | Vintage Books |
| 2012 | Finalist | The Pursuit of Perfection: A Life of Celia Franca | Carol Bishop-Gwyn | Unknown |
| 2012 | Finalist | What We Talk About When We Talk About War | Noah Richler | Unknown |
| 2011 | Winner | Mordecai: The Life & Times | Charles Foran | Unknown |
| 2011 | Finalist | Empire of the Beetle: How Human Folly and a Tiny Bug Are Killing North America's Great Forests | Andrew Nikiforuk | Unknown |
| 2011 | Finalist | Nation Maker: Sir John A. Macdonald: His Life, Our Times; Volume Two: 1867-1891 | Richard Gwyn | Unknown |
| 2011 | Finalist | The Damned: The Canadians at the Battle of Hong Kong and the POW Experience, 1941-45 | Nathan M. Greenfield | Unknown |
| 2011 | Finalist | The Measure of a Man: The Story of a Father, a Son, and a Suit | JJ Lee | Unknown |
| 2010 | Winner | Lakeland: Journeys into the Soul of Canada | Allan Casey | Greystone Books |
| 2010 | Finalist | A History of Marriage | Elizabeth Abbott | Unknown |
| 2010 | Finalist | Burmese Lessons: A Love Story | Karen Connelly | Unknown |
| 2010 | Finalist | Just Watch Me: The Life of Pierre Elliott Trudeau, 1968-2000 | John English | Unknown |
| 2010 | Finalist | The Boy in the Moon: A Father's Search for His Disabled Son | Ian Brown | Random House Canada |
| 2009 | Winner | A Place Within: Rediscovering India | M. G. Vassanji | Unknown |
| 2009 | Finalist | American Raj: Liberation or Domination? (Resolving the Conflict Between the West and the Muslim World) | Eric Margolis | Unknown |
| 2009 | Finalist | Fire and Fury: The Allied Bombing of Germany, 1942-45 | Randall Hansen | Faber & Faber |
| 2009 | Finalist | Grass, Sky, Song: Promise and Peril in the World of Grassland Birds | Trevor Herriot | Unknown |
| 2009 | Finalist | The Cello Suites: J.S. Bach, Pablo Casals, and the Search for a Baroque Masterpiece | Eric Siblin | Unknown |
| 2008 | Winner | Fifteen Days: Stories of Bravery, Friendship, Life and Death from Inside the New Canadian Army | Christie Blatchford | Unknown |
| 2008 | Finalist | An Imperfect Offering: Humanitarian Action in the Twenty-first Century | James Orbinski | Unknown |
| 2008 | Finalist | God’s Mercies: Rivalry, Betrayal and the Dream of Discovery | Douglas Hunter | Unknown |
| 2008 | Finalist | The Black Grizzly of Whiskey Creek | Sid Marty | Unknown |
| 2008 | Finalist | The Geography of Hope: A Tour of the World We Need | Chris Turner | Unknown |
| 2007 | Winner | I've Got a Home in Glory Land: A Lost Tale of the Underground Railroad | Karolyn Smardz Frost | Macmillan |
| 2007 | Finalist | 28: Stories of AIDS in Africa | Stephanie Nolen | Unknown |
| 2007 | Finalist | Citizen of the World: The Life of Pierre Elliott Trudeau, Volume One: 1919-1968 | John English | Unknown |
| 2007 | Finalist | Enter the Babylon System: Unpacking Gun Culture from Samuel Colt to 50 Cent | Rodrigo Bascunan, Christian Pearce | Unknown |
| 2007 | Finalist | Silence of the Songbirds: How We Are Losing the World's Songbirds and What We Can Do to Save Them | Bridget Stutchbury | Unknown |
| 2006 | Winner | The Judgment of Paris: The Revolutionary Decade That Gave the World Impressionism | Ross King | Unknown |
| 2006 | Finalist | Starlight Tour: The Last, Lonely Night of Neil Stonechild | Susanne Reber, Robert Renaud | Unknown |
| 2006 | Finalist | The Empire of Mind: Digital Piracy and the Anti-Capitalist Movement | Michael Strangelove | Unknown |
| 2006 | Finalist | The Half-Lives of Pat Lowther | Christine Wiesenthal | Unknown |
| 2006 | Finalist | The Hanging of Angélique: The Untold Story of Canadian Slavery and the Burning of Old Montréal | Afua Cooper | Unknown |
| 2005 | Winner | The Golden Spruce: A True Story of Myth, Madness and Greed | John Vaillant | Knopf Canada |
| 2005 | Finalist | Riding with Rilke: Reflections on Motorcycles and Books | Ted Bishop | Unknown |
| 2005 | Finalist | The Incendiary: The Misadventures of John the Painter, First Modern Terrorist | Jessica Warner | Unknown |
| 2005 | Finalist | The Molly Fire | Michael Mitchell | Unknown |
| 2005 | Finalist | Written in the Flesh: A History of Desire | Edward Shorter | Unknown |
| 2004 | Winner | Shake Hands With the Devil: The Failure of Humanity in Rwanda | Roméo Dallaire | Random House |
| 2004 | Finalist | Acquainted With the Night: Excursions Through the World After Dark | Christopher Dewdney | Unknown |
| 2004 | Finalist | Dark Age Ahead | Jane Jacobs | Random House Canada |
| 2004 | Finalist | I'll Tell You a Secret: A Memory of Seven Summers | Anne Coleman | Unknown |
| 2004 | Finalist | Wisdom & Metaphor | Jan Zwicky | Unknown |
| 2003 | Winner | Paris 1919: Six Months That Changed the World | Margaret MacMillan | Unknown |
| 2003 | Finalist | A Keen Soldier: The Execution of Second World War Private Harold Pringle | Andrew Clark | Unknown |
| 2003 | Finalist | Michelangelo & the Popes Ceiling | Ross King | Random House |
| 2003 | Finalist | Missing Sarah: A Vancouver Woman Remembers Her Vanished Sister | Maggie de Vries | Unknown |
| 2003 | Finalist | While Canada Slept: How We Lost Our Place in the World | Andrew Cohen | Unknown |
| 2002 | Winner | Saboteurs: Wiebo Ludwig's War Against Big Oil | Andrew Nikiforuk | Unknown |
| 2002 | Finalist | Possessing Genius: The Bizarre Odyssey of Einstein's Brain | Carolyn Abraham | Icon Books |
| 2002 | Finalist | Starting Out in the Afternoon: A Mid-Life Journey into Wild Land | Jill Frayne | Unknown |
| 2002 | Finalist | Vis à Vis: Field Notes on Poetry & Wilderness | Don McKay | Unknown |
| 2002 | Finalist | When Words Deny the World: The Reshaping of Canadian Writing | Stephen Henighan | Unknown |
| 2001 | Winner | The Ingenuity Gap | Thomas Homer-Dixon | Vintage Books |
| 2001 | Finalist | Grain of Truth: The Ancient Lessons of Craft | Ross A. Laird | Unknown |
| 2001 | Finalist | Reading Pictures: A History of Love and Hate | Alberto Manguel | Vintage Canada |
| 2001 | Finalist | The Laughing One: A Journey to Emily Carr | Susan Crean | Unknown |
| 2001 | Finalist | The Taste of Metal: A Deserter’s Story | Jack Todd | Unknown |
| 2000 | Winner | Notes from the Hyena's Belly | Nega Mezlekia | Penguin Press |
| 2000 | Finalist | A Story as Sharp as a Knife: The Classical Haida Mythtellers and Their World | Robert Bringhurst | Douglas & McIntyre |
| 2000 | Finalist | River in a Dry Land | Trevor Herriot | Unknown |
| 2000 | Finalist | The Spinster and the Prophet | A. B. McKillop | Unknown |
| 1999 | Winner | Water | Marq de Villiers | Unknown |
| 1999 | Finalist | Baltimore's Mansion: A Memoir | Wayne Johnston | Unknown |
| 1999 | Finalist | Paper Shadows: A Chinatown Childhood | Wayson Choy | Penguin Books |
| 1999 | Finalist | Surpassing Wonder | Donald Harman Akenson | McGill-Queen's University Press |
| 1999 | Finalist | William Osler | Michael Bliss | University of Toronto Press |
| 1998 | Winner | Lines on the Water: A Fisherman's Life on the Miramichi | David Adams Richards | Unknown |
| 1998 | Finalist | Mamie's Children: Three Generations of Prairie Women | Judy Schultz | Unknown |
| 1998 | Finalist | Mrs. King: The Life and Times of Isabel Mackenzie King | Charlotte Gray | Unknown |
| 1998 | Finalist | Stolen Life: The Journey of a Cree Woman | Rudy Wiebe, Yvonne Johnson | Unknown |
| 1998 | Finalist | The Quiet Limit of the World: A Journey to the North Pole to Investigate Global Warming | Wayne Grady | Unknown |
| 1997 | Winner | Drumblair: Memories of a Jamaican Childhood | Rachel Manley | Unknown |
| 1997 | Finalist | Loyal Till Death: Indians and the North-West Rebellion | Blair Stonechild, Bill Waiser | Unknown |
| 1997 | Finalist | Morgentaler: A Difficult Hero | Catherine Dunphy | Unknown |
| 1997 | Finalist | One River: Explorations and Discoveries in the Amazon Rain Forest | Wade Davis | Unknown |
| 1997 | Finalist | This Ragged Place: Travels Across the Landscape | Terry Glavin | Unknown |
| 1996 | Winner | The Unconscious Civilization | John Ralston Saul | Unknown |
| 1996 | Finalist | A Blue Boy in a Black Dress | T. F. Rigelhof | Unknown |
| 1996 | Finalist | After the First Death: A Journey Through Chile, Time, Mind | Lake Sagaris | Unknown |
| 1996 | Finalist | The Convict Lover: A True Story | Merilyn Simonds | Unknown |
| 1996 | Finalist | The Home Team: Fathers, Sons & Hockey | Roy MacGregor | Unknown |
| 1995 | Winner | Shadow Maker: The Life of Gwendolyn MacEwen | Rosemary Sullivan | Unknown |
| 1995 | Finalist | Leaning on the Wind | Sid Marty | Unknown |
| 1995 | Finalist | Shooting the Hippo | Linda McQuaig | Unknown |
| 1995 | Finalist | The Last House of Ulster: A Family in Belfast | Charles Foran | Unknown |
| 1994 | Winner | Rogue Primate: An Exploration of Human Domestication | John A. Livingston | Key Porter Books |
| 1994 | Finalist | Light for a Cold Land: Lawren Harris's Work and Life-An Interpretation | Peter Larisey | Unknown |
| 1994 | Finalist | The Concubine's Children: Portrait of a Family | Denise Chong | Penguin Press |
| 1994 | Finalist | The Invitation: A Memoir of Family Love and Reconciliation | Joan Haggerty | Unknown |
| 1994 | Finalist | The Perfection of the Morning: An Apprenticeship in Nature | Sharon Butala | Unknown |
| 1993 | Winner | Touch the Dragon | Karen Connelly | Unknown |
| 1993 | Finalist | Frontiers: The Epic of South Africa’s Creation and the Tragedy of the Xhosa People | Noel Mostert | Knopf |
| 1993 | Finalist | In a Gilded Cage | Marian Fowler | Vintage Books |
| 1993 | Finalist | Systems of Survival | Jane Jacobs | Unknown |
| 1993 | Finalist | The Heartbreak Grape: A Journey in Search of the Perfect Pinot Noir | Marq de Villiers | Unknown |
| 1992 | Winner | Revenge of the Land: A Century of Greed, Tragedy and Murder on a Saskatchewan Farm | Maggie Siggins | Unknown |
| 1992 | Finalist | Inside: The Biography of John Gunther | Ken Cuthbertson | Unknown |
| 1992 | Finalist | Mr. Sam: The Life and Times of Samuel Bronfman | Michael R. Marrus | Unknown |
| 1992 | Finalist | Plague: A Story of Smallpox in Montreal | Michael Bliss | Unknown |
| 1991 | Winner | Occupied Canada: A Young White Man Discovers His Unsuspected Past | Robert Hunter, Robert Calihoo | Unknown |
| 1991 | Finalist | By Heart: Elizabeth Smart, A Life | Rosemary Sullivan | Unknown |
| 1991 | Finalist | Poor Polidori: A Critical Biography of the Author of "The Vampyre" | D. L. MacDonald | Unknown |
| 1991 | Finalist | Words With Power | Northrop Frye | Unknown |
| 1991 | Finalist | Zero Hour | Kristjana Gunnars | Unknown |
| 1990 | Winner | Trudeau and Our Times | Stephen Clarkson, Christina McCall | Unknown |
| 1990 | Finalist | A Life on the Fringe: The Memoirs of Eugene Forsey | Eugene Forsey | Unknown |
| 1990 | Finalist | God's Dominion: A Sceptic's Quest | Ron Graham | Unknown |
| 1990 | Finalist | Inside Memory: Pages from a Writer's Workbook | Timothy Findley | Unknown |
| 1990 | Finalist | The Last Modern: A Life of Herbert Read | James King | Unknown |
| 1989 | Winner | Willie: The Life of W. Somerset Maugham | Robert Calder | Unknown |
| 1989 | Finalist | An Odyssey in Time: The Dinosaurs of North America | Dale A. Russell | Unknown |
| 1989 | Finalist | Wombs and Alien Spirits | Janice Boddy | Unknown |
| 1989 | Finalist | Wordstruck | Robert MacNeil | Unknown |
| 1988 | Winner | In the Sleep Room | Anne Collins | Unknown |
| 1988 | Finalist | Fishing with John | Edith Iglauer | Farrar, Straus and Giroux |
| 1988 | Finalist | The Arctic Grail | Pierre Berton | Viking |
| 1988 | Finalist | When Freedoms Collide | Alan Borovoy | Unknown |
| 1987 | Winner | The Russian Album | Michael Ignatieff | Unknown |
| 1987 | Finalist | Brazilian Journal | P. K. Page | Unknown |
| 1987 | Finalist | Under Eastern Eyes | Janice Kulyk Keefer | Unknown |
| 1986 | Winner | Northrop Frye on Shakespeare | Northrop Frye | Fitzhenry & Whiteside |
| 1986 | Finalist | Home | Witold Rybczynski | Unknown |
| 1986 | Finalist | Melanie Klein | Phyllis Grosskurth | Unknown |
| 1986 | Finalist | The Imperial Canadian | Claude Bissell | Unknown |
| 1985 | Winner | The Regenerators: Social Criticism in Late Victorian English Canada | Ramsay Cook | Unknown |
| 1985 | Finalist | Canada 1922-1939: Decades of Discord | John Herd Thompson | Unknown |
| 1985 | Finalist | Prelude to Quebec's Quiet Revolution: Liberalism versus Neo-nationalism | Michael D. Behiels | McGill-Queen's University Press |
| 1985 | Finalist | The Man from Halifax: Sir John Thompson, Prime Minister | P. B. Waite | Unknown |
| 1984 | Winner | The Private Capital: Ambition and Love in the Age of Macdonald and Laurier | Sandra Gwyn | Unknown |
| 1984 | Finalist | P.Q.: René Lévesque and the Parti Québécois in Power | Graham Fraser | Unknown |
| 1984 | Finalist | Prairie Fire: The 1885 North-West Rebellion | Bob Beal, Rod Macleod | Unknown |
| 1983 | Winner | Byng of Vimy: General and Governor General | Jeffery Williams | Unknown |
| 1983 | Finalist | Reading from Left to Right: One Man's Political History | H S Ferns | Unknown |
| 1983 | Finalist | The Game | Ken Dryden | William Collins |
| 1982 | Winner | Louisbourg Portraits: Life in an Eighteenth- Century Garrison Town | Christopher Moore | Unknown |
| 1982 | Finalist | Grits: An Intimate Portrait of The Liberal Party | Christina McCall-Newman | Unknown |
| 1982 | Finalist | The Great Code: The Bible and Literature | Northrop Frye | Unknown |
| 1981 | Winner | Caribou and the Barren-Lands | George Calef | Unknown |
| 1981 | Finalist | Hugh MacLennan: A Writer's Life | Elspeth Cameron | Unknown |
| 1981 | Finalist | The Young Vincent Massey | Claude Bissell | Unknown |
| 1980 | Winner | Discipline of Power: The Conservative Interlude and the Liberal Restoration | Jeffrey Simpson | Unknown |
| 1980 | Finalist | Scotland Farewell: The People of the Hector | Donald MacKay | Unknown |
| 1980 | Finalist | The Chinese: Portrait of a People | John Fraser | Unknown |
| 1979 | Winner | Emily Carr | Maria Tippett | Unknown |
| 1979 | Finalist | C.D. Howe | Robert Bothwell, William Kilbourn | Unknown |
| 1979 | Finalist | Prairie Capitalism | Larry Pratt, John Richards | Unknown |
| 1978 | Winner | Go-Boy! Memories of a Life Behind Bars | Roger Caron | Unknown |
| 1977 | Winner | Essays on the Constitution | Frank Scott | Unknown |
| 1976 | Winner | The Writing of Canadian History | Carl Berger | Unknown |
| 1975 | Winner | Hallowed Walls | Marion MacRae, Anthony Adamson | Unknown |
| 1974 | Winner | The Siren Years | Charles Ritchie | Unknown |
| 1973 | Winner | Painters in a New Land | Michael Bell | Unknown |
| 1971 | Winner | The Last Spike | Pierre Berton | Unknown |
| 1968 | Winner | Hunting Tigers Under Glass | Mordecai Richler | Unknown |
| 1967 | Winner | The Oxford Companion to Canadian History and Literature | Norah Story | Unknown |
| 1966 | Winner | The Crystal Spirit: A Study of George Orwell | George Woodcock | Unknown |
| 1965 | Winner | In Defence of Canada | James Eayrs | Unknown |
| 1964 | Winner | John Addington Symonds | Phyllis Grosskurth | Unknown |
| 1963 | Winner | Brown of the Globe | J.M.S. Careless | Unknown |
| 1962 | Winner | The Gutenberg Galaxy | Marshall McLuhan | Unknown |
| 1961 | Winner | The Ascent of Life | T. A. Goudge | Unknown |
| 1960 | Winner | In Search of Canadian Liberalism | Frank H. Underhill | Unknown |
| 1958 | Co-winner | Klondike | Pierre Berton | Unknown |
| 1958 | Co-winner | The History Of Fanny Burney | Joyce Hemlow | Unknown |
| 1957 | Co-winner | Canada: Tomorrow's Giant | Bruce Hutchison | Unknown |
| 1957 | Co-winner | The Path of Destiny | Thomas H. Raddall | Unknown |
| 1956 | Co-winner | Century of Conflict | Joseph Lister Rutledge | Unknown |
| 1956 | Co-winner | The Mysterious North | Pierre Berton | Unknown |
| 1955 | Co-winner | John A. Macdonald, The Old Chieftain | Donald G. Creighton | Unknown |
| 1955 | Co-winner | Man's Emerging Mind | N. J. Berrill | Unknown |
| 1954 | Co-winner | Thirty and Three | Hugh MacLennan | Unknown |
| 1954 | Co-winner | This Most Famous Stream | Arthur R. M. Lower | Unknown |
| 1953 | Co-winner | Canada, A Story of Challenge | J. M. S. Careless | Unknown |
| 1953 | Co-winner | Sex and the Nature of Things | N. J. Berrill | Unknown |
| 1952 | Co-winner | John A. Macdonald, The Young Politician | Donald G. Creighton | Unknown |
| 1952 | Co-winner | The Incredible Canadian | Bruce Hutchison | Unknown |
| 1951 | Co-winner | The Ardent Exile | Josephine Phelan | Unknown |
| 1951 | Co-winner | The Government of Prince Edward Island | Frank MacKinnon | Unknown |
| 1950 | Co-winner | The Progressive Party in Canada | W. L. Morton | Unknown |
| 1950 | Co-winner | The Saskatchewan | Marjorie Wilkins Campbell | Unknown |
| 1949 | Co-winner | Cross-country | Hugh MacLennan | Unknown |
| 1949 | Co-winner | Democratic Government in Canada | R. MacGregor Dawson | Unknown |
| 1948 | Co-winner | Halifax, Warden of the North | Thomas H. Raddall | McClelland & Stewart |
| 1948 | Co-winner | The Canadian Army, 1939-1945 | C. P. Stacey | Unknown |
| 1947 | Co-winner | Haida | William Sclater | Oxford University Press |
| 1947 | Co-winner | The Government of Canada | R. MacGregor Dawson | Unknown |
| 1946 | Co-winner | Colony to Nation | Arthur R. M. Lower | Unknown |
| 1946 | Co-winner | In Search of Myself | Frederick Philip Grove | Unknown |
| 1945 | Co-winner | Gauntlet to Overlord | Ross Munro | Unknown |
| 1945 | Co-winner | We Keep a Light | Evelyn M. Richardson | Unknown |
| 1944 | Co-winner | Partner in Three Worlds | Dorothy Duncan | Unknown |
| 1944 | Co-winner | The War: Fourth Year | Edgar McInnis | Unknown |
| 1943 | Co-winner | On Canadian Poetry | E. K. Brown | Unknown |
| 1943 | Co-winner | The Incomplete Anglers | John D. Robins | Unknown |
| 1942 | Co-winner | The Unguarded Frontier | Edgar McInnis | Unknown |
| 1942 | Co-winner | The Unknown Country | Bruce Hutchison | Unknown |
| 1941 | Winner | Klee Wyck | Emily Carr | Fitzhenry & Whiteside |
| 1940 | Winner | Slava Bohu | J. F. C. Wright | Unknown |
| 1939 | Winner | Confessions of an Immigrant's Daughter | Laura Salverson | Unknown |
| 1938 | Winner | Canadian Mosaic | John Murray Gibbon | Unknown |
| 1937 | Winner | My Discovery of the West | Stephen Leacock | Unknown |
| 1936 | Winner | TBR: Newspaper Pieces | Thomas Beattie Roberton | Unknown |