After relocating to Boston, Massachusetts, Knapp continued working as an editor for the American Board of Commissioners for Foreign Missions from 1923 to 1940. She had published her experiences while working in the Ottoman Empire in several books entitled "The mission at Van in Turkey in war time" (1916) and "The Tragedy of Bitlis" (1917), the latter being a collection of eyewitness accounts as noted above. Knapp has donated her personal photographs, letters, and documents related to her experiences in Bitlis, Erzerum, and Van to the Mount Holyoke College Archives & Special Collections.[4]