Deborah Bennett and Tim Coffer with Mollusks, 1979, by Ploskonka, Jeffrey, October 1979, Smithsonian Archives - History Div, Deborah Bennett, museum technician, and Tim Coffer, data gatherer, sort trays of seashells for the mollusk inventory in the National Museum of Natural History's Division of Mollusks. The shells are part of an overall collection close to 800,000 shells. The inventory, directed by Bennett, is a preparatory step for the collections move to the Smithsonian's Silver Hill Museum Support Center..