Susan Arnold Elston Wallace was an American author and poet from Crawfordsville, Indiana. In addition to writing travel articles for several American magazines and newspapers, Wallace published six books, five of which contain collected essays from her travels in the New Mexico Territory, Europe, and the Middle East in the 1880s: The Land of the Pueblos (1888), The Storied Sea (1883), The Repose in Egypt: A Medley (1888), Along the Bosphorus, and Other Sketches (1898), and The City of the King: What the Child Jesus Saw and Heard (1903). She was also the wife of Lew Wallace, a lawyer, American Civil War general, politician, author and diplomat. Susan completed the manuscript of Lew Wallace's two-volume autobiography following his death in 1905, with the assistance of Mary Hannah Krout, another Crawfordsville author. Wallace died in Crawfordsville in 1907.