Johns Hopkins Alumni Magazine (1916). S.227 and 320 (archive.org).
Harmon Northrop Morse: The Osmotic Pressure of Aqueous Solutions: Report on Investigations Made in the Chemical Laboratory of the Johns Hopkins University During the Years 1899–1913. Carnegie institution of Washington, 1914, S.222 (archive.org).
Wilhelm Pfeffer: Osmotische Untersuchungen – Studien zur Zellmechanik. Wilhelm Engelmann, Leipzig 1921, S.10 (archive.org).
Harmon Northrop Morse: The Osmotic Pressure of Aqueous Solutions: Report on Investigations Made in the Chemical Laboratory of the Johns Hopkins University During the Years 1899–1913. Carnegie institution of Washington, 1914, S.77–78 (archive.org).
books.google.com
Patrick J. Sinko, Alfred N. Martin: Martin's Physical Pharmacy and Pharmaceutical Sciences: Physical Chemical and Biopharmaceutical Principles in the Pharmaceutical Sciences. Lippincott Williams & Wilkins, 2005, ISBN 0-7817-5027-X, S.137–141 (google.com).
Ira Remsen: Harmon Northrop Morse (1848–1920). In: Proceedings of the American Academy of Arts and Sciences. Band58, Nr.17, September 1923, S.607–613, JSTOR:20026040.
The Avogadro Medal and the Work of Professor Morse. In: The Scientific Monthly. Band2, Nr.6, Juni 1916, S.619–620, JSTOR:6174.
Ira Remsen: Harmon Northrup Morse. In: Science, New Series. Band52, Nr.1352, 26. November 1920, S.497–500, JSTOR:1645930.