2013. Marvin Bell, poet, for his collective body of work.
2009. Dorothy Garlock, mystery writer, for her collective body of work.
2006. Michael Carey, for The Holy Ground, but also for his outstanding contributions to literature in Iowa in writing, teaching and as a regional publisher.
2003. Leigh Michaels, for her collective body of work.
2001. Max Allan Collins, for his collective body of work.
1999. Dr. Janusz Bardach, Man is Wolf to Man: Surviving the Gulag.
1996. Mary Swander, Out of this World: A Woman's Life Among the Amish.
1994. Robert Waller, Bridges of Madison County.
1991. Jane Smiley, Ordinary Love & Good Will.
1989. Lynn Hall, The Secret Life of Dagmar Schultz.
1986. Amy Clampitt, Kingfisher.
1983. Julie McDonald, The Sailing Out.
1980. Frederick Manfred, Green Earth.
1977. James Schell Hearst, Shaken by Leaf-Fall: Poems and Dry Leaves: New Poems.
1974. Curtis Harnack, We Have All Gone Away.
1971. Joseph Frazier Wall, Andrew Carnegie.
1968. R.V. Cassill, The Father and Other Stories.
1965. Calvin Kentfield, All Men are Mariners: A Novel and The Great Wondering Goony Bird: Ten Short Stories.
1962. Wallace Stegner, A Shooting Star.
1959. Esther Warner, Silk Cotton Tree.
1953. Marcus Bach, Strange Altars.
1949. Bess Streeter Aldrich, Journey into Christmas.
1948. Thomas Duncan, Gus the Great.
1946. Darrell Garwood, Artists in Iowa.
1945. John T. Frederick, Out of the Midwest.
William Shirer. Berlin Diary.
1944. Hartzell Spence, One Foot in Heaven.
1940. Paul Engle, Corn.
1939. Frank L. Mott, Selected lists of books on journalism.
1938. William J. Peterson, Steamboating on the Upper Mississippi.
1936. MacKinlay Kantor, Voice of Bugle Ann.
1935. Ruth Suckow, The Folks.
1934. Johnson Brigham, Youth of Old Age.