Abstract Malacological surveys and reports from the Upper Mississippi River and its tributaries prepared by citizen scientist Marion Havlik under the business name of Malacological Consultants. The bulk of the collection spans from 1977-2011 and focuses on Havlik's research interests of naiad mollusks from the Upper Mississippi River System; the preservation of ecosystems; and clean water and the monitoring of contaminants. She worked tirelessly advocating for the protection of the overlooked, yet...