The monetary appraisal of archives and manuscripts is a critical yet underexplored intersection of library science and financial valuation. This article addresses the persistent knowledge gap between archival assessment and fiscal valuation and provides an overview of the monetary appraisal process in the United States. It focuses on concluding the fair market value (FMV) of noncash charitable contributions, a process governed by Internal Revenue Service (IRS) regulations and the Uniform Standards of Professional Appraisal Practice (USPAP). By documenting practices and terminology, the article serves as a resource for archivists navigating the complexities of donor relations and institutional stewardship. It advocates for increased fiscal literacy within the archival profession, suggesting that an integrated understanding of market dynamics and stewardship costs is essential for the care and financial substantiation of collections.