• Not a sound recording (see 17 USC 104 (b)(3))
• First published in the Soviet Union before it signed the Universal Copyright Convention [1] on May 27, 1973 (see 17 USC 104 (b)(2))
• Not published in another country within 30 days of first publication (see 17 USC 104 (b))
• Authored solely by citizens of the Soviet Union (see 17 USC 104 (b)(1))

Therefore, this work is not subject to copyright protection in the United States (see 17 USC 104). As well, if such works were in the public domain in Russia as of January 1, 1996 ^{[citation needed]}, the copyright in this work was not restored (see 17 USC 104A (h)(6)(b)). Therefore, this work is in the public domain in the United States and possibly other jurisdictions. Because this image is an exact digital reproduction of this work, it is in the public domain in the United States