Teachers at SERC Workshop, by Strauss, Richard, 1993, Smithsonian Archives - History Div, During a one-day workshop for teachers, the Smithsonian Environment Research Center's (SERC) Mark Haddon, left, gave teachers a lesson on the bottom-dwelling animals of the Rhode River. Lynne Cherry, SERC artist-in-residence who helped host the workshop, is at center in hat and sunglasses..