File:Yevgeni Alekseyevich Preobrazhensky - Third Anniversary of the Russian October Revolution (1921).djvu

This file is in the public domain in the United States because it was published in 1920, before the cutoff of January 1, 1929.

The longest-living author of this work died in 1937, so this work is in the public domain in countries and areas where the copyright term is the author's life plus 86 years or less. This work 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.

This file was published in 1921 and is anonymous or pseudonymous due to unknown authorship. It is in the public domain in the United States as well as countries and areas where the copyright terms of anonymous or pseudonymous works are 102 years or less since publication.