Author:Louis Pope Gratacap
|←Author Index: Gr||Louis Pope Gratacap
|Geologist, mineralogist, natural historian|
Articles in Popular Science Monthly
- "The Ice Age I", in Popular Science Monthly Volume 12, January 1878
- "The Ice Age II", in Popular Science Monthly Volume 14, November 1878
- "The Primeval American Continent", in Popular Science Monthly Volume 19, June 1881
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.