During her time as a missionary, Knapp was a witness to the Armenian genocide. During the Armenian genocide, Knapp was stationed in Van and eventually described the events in the region in two published books describing her experiences. The first book, The Mission at Van in Turkey in War Time, describes in detail the massacres of Armenians by Turkish soldiers during the Van Resistance.[1] Her second book, The Tragedy of Bitlis, relates the narratives of two nurses who witnessed massacres of Armenians in Bitlis.[2] Her recounts of Bitlis are one of the few written accounts of massacres in that area.