The Mary Nickliss Prize is given annually to an academic historian for "the most original" book in United States Women's and/or Gender History (or its colonial antecedent). The OAH defines "the most original" book as one that is a path-breaking work or that challenges and/or changes widely accepted scholarly interpretations in the field of U.S. Women's and/or Gender History. If no book submitted for the prize meets this criterion, the award shall be given for "the best" book in U.S. Women's and/or Gender History. The "best" book recognizes the ideas and originality of the significant historical scholarship being done by historians of U.S. Women's and/or Gender History and makes a significant contribution to the understanding of U.S. Women's and/or Gender History. Each entry must be published during the calendar year preceding that in which the award is given, January 1, 2024, through December 31, 2024. One copy of each entry, clearly labeled "2025 Mary Nickliss Prize Entry'' must be mailed directly to the committee members. If a book carries a copyright date that is different from the publication date, but the actual publication date falls during the correct time frame making it eligible, please include a letter of explanation from the publisher with each copy of the book sent to the committee members. Please mail submissions to the committee members: Deborah Cohen, Chair; Rachel Devlin; and April Haynes. Please email Deborah Cohen, Chair to provide title(s) you will submit for consideration so the committee can verify that all books have been received. Please visit the award's website or contact the Organization of American Historians for more information.