Author:Albert Tracy Leffingwell
Albert Tracy Leffingwell
Works
[edit]Articles in Popular Science Monthly
[edit]- "The Scientific Aspect of Free-Will" in Popular Science Monthly, 16 (April 1880)
- "Two Wonderful Instruments" in Popular Science Monthly, 28 (November 1885)
Some or all works by this author were published before January 1, 1929, and 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.
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