The copyright situation of this work is theoretically uncertain, because in the country of origin copyright lasts 70 years after the death of the author, and the date of the author's death is unknown. However, the date of creation of the work was over 120 years ago , and it is thus a reasonable assumption that the copyright has expired (see here for the community discussion). Do not use this template if the date of death of the author is known.

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You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. 一部 國家는 著作權을 死後 70年보다 더 길게 適用하고 있으므로 注意가 必要합니다. 멕시코는 100年, 자메이카는 95年, 콜롬비아는 80年, 과테말라와 사모아는 75年을 著作權 保護 期間으로 適用하고 있습니다. 따라서 該當 國家에서 이 作品은 퍼블릭 도메인이 아닐 수 있으며, 著作權 相互主義 또한 適用되지 않을 수 있습니다.