Megan Marshall lectures on Elizabeth, Mary, and Sophia Peabody, the subjects of her 20 years in the making biography, The Peabody Sisters. Marshall focuses on the period during which the Peabody sisters made their indelible mark on history. Her unprecedented research into these lives uncovered hundreds of previously unread letters, as well as other previously unmined original sources. The Peabody Sisters casts new light on a legendary American era. **Megan Marshall**'s work on The Peabody Sisters has been supported by the Guggenheim Foundation and the National Endowment for the Humanities. She has published numerous articles on women's history and New England history.