本图像属于公有领域。因为它是纯粹扫描或影印自一个已处于公有领域的原件或类似的预期不会受到版权保护的扫描或影印件。其原件因以下原因处于公有领域：

Public domainPublic domainfalsefalse

This work is in the public domain because it was published in the United States between 1929 and 1977, inclusive, with a defective copyright notice (copyright notice information) containing at least one of the following defects: Notice does not include the copyright symbol ©, the word "Copyright", or the abbreviation "Copr."; Notice is dated more than one year later than the actual date of first publication; Notice does not include a named claimant or does not name the actual copyright holder; Notice is illegible or concealed from view; It is a printed literary, musical, or dramatic work that does not include the year. A defective notice does not invalidate copyright in cases where the error is immaterial and would not mislead an infringer, such as an abbreviated name. Additionally, foreign works created outside the US are subject to copyright restoration even with a defective notice. It is not in the public domain in the countries or areas that do not apply the rule of the shorter term for US works, such as Canada, mainland China (not Hong Kong or Macao), Germany, Mexico, Switzerland, and other countries with individual treaties. Deutsch ∙ English ∙ español ∙ +/−

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本标签主要用于该扫描件有可能使用任何增强功能（如亮度、对比度、色彩调整、锐利化等），而这些增强功能无法达到原创性而无法产生版权的情形下使用。而该标签也能使用在无法判定本扫描件使用任何增强功能，以及已知使用增强功能但没有充分证据时。对于采取原始忠实扫描而不使用增强功能的照片，可以适当采用{{PD-old}}标签取代。对于本标签的使用方法，参见共享资源:何时使用PD-Scan标签。

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注意：这个标签只适用于扫描和影印件。对于来自他处的公有领域原件的照片，应该使用{{PD-Art}}。参看共享资源:何时使用PD-Art标签。