Author:William Foster Apthorp
|←Author Index: Ap||William Foster Apthorp
|United States writer, drama and music critic, editor and musician|
- “Apthorp, William Foster,” The New International Encyclopædia. New York: Dodd, Mead and Co., 1905.
- “Apthorp, William Foster” in The Encyclopedia Americana. New York, 1920.
Works by this author published before January 1, 1923 are in the public domain worldwide because the author died at least 100 years ago. Translations or editions published later may be copyrighted. Posthumous works may be copyrighted based on how long they have been published in certain countries and areas.