Author:Robert Andrews Millikan
- The Electron: Its Isolation and Measurements and the Determination of Some of its Properties, The University of Chicago Press (1917)
- "Recent Discoveries in Radiation and their Significance" in Popular Science Monthly, 64 (April 1904)
Some or all works by this author are in the public domain in the United States because they were published before January 1, 1928.
The longest-living author of these works died in 1953, so these works are in the public domain in countries and areas where the copyright term is the author's life plus 69 years or less. These works may be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.