This work is in the public domain in the United States as it was first published after December 31, 2002 and the author died at least 70 years ago. This is a posthumous work and may be copyrighted in certain countries and areas, based on how many years after posthumous publication, rather than how many years after author's death.

The author died in 1936, so this work is also in the public domain in countries and areas where the copyright term is the author's life plus 80 years or less. This work may also 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.