bookstore. i'm so excited to welcome you to our event tonight with judy ginsburg presenting her new book, last seen the enduring search by formerly enslaved people to find lost family in conversation yale stern how tonight's event will conclude with some time your questions after which we'll have a book signing at this table to ask a question just raise your hand during the q&a portion and, our speakers will call on you and if you haven't, you can find a copy of last seen the registers in the next room. as always, thank for buying books from harvard bookstore. your purchases, support events like this and help to ensure the future of our local independent bookstore. and a quick reminder and you for sanitizing your cell phones for the duration of tonight's event. now i'm pleased to introduce tonight speakers judith giesberg, the robert and birmingham chair and humanities and is professor of history at of university. she is the author of civil war sisterhood the united states sanitary commission and the civil war. soldiers pornography in the making of modern morality. ginsburg directs a digital project lasting finding family after slavery that is collecting, digitizing and transcribing in