The Society of U.S. Intellectual Historians is excited to announce that the co-winners of the 2026 book prize in United States Intellectual History are Andrew Hartman for Karl Marx in America (University of Chicago Press, 2025) and Jarvis C. McInnis, Afterlives of the Plantation: Plotting Agrarian Futures in the Global Black South (Columbia, 2025). Honorable mention is awarded to Andrew Preston, Total Defense: The New Deal and the Invention of National Security (Harvard, 2025). Thanks to the Book Prize Committee (Robert Greene, Ronnie Grinberg, and Keidrick J. Roy) for the detailed and deliberate work done to reach this decision. The Read more