Hindenburg, Marshal von. Out of my life 1. 由F. A. Holt翻译. New York: Harper & Brothers. 1921. Howard, M. The Franco-Prussian War: The German Invasion of
pamphlet form. The link here takes the reader to a 1912 republication by Harper & Brothers. Also available from Project Gutenberg. Frederick Winslow Taylor
King of Roumania. Harper& Brothers. Kremnitz, Mite; Sidney Whitman, Sidney. Reminiscences of the King of Roumania. Harper& Brothers. 1899. Mite Kremnitz
Roberts, Edmund. Embassy to the Eastern Courts of Cochin-China, Siam, and Muscat. New York: Harper & Brothers. 1837: 34 [2017-07-05]. (原始内容存档于2017-07-17).