File:Perry-Mason-Crying-Swallow-1.jpg

描述Perry-Mason-Crying-Swallow-1.jpg	English: Illustration from The American Magazine printing of "The Case of the Crying Swallow", a Perry Mason short story by Erle Stanley Gardner
日期	1947年8月
來源	Self scan from The American Magazine for August 1947 (p. 145)
作者	Crowell Publishing Company, illustration by Robert W. Douglas
授權許可 (重用此檔案)	Public domainPublic domainfalsefalse 本作品在美國屬於公有領域，是因為該作品是在1929與1963年之間出版，沒有在該作品增加著作權聲明，且沒有進行著作權更新。除非此作品之作者已經過世一段時間，並達到公有領域所要求的條件，這類美國作品在其他不適用較短期限法則的國家或地區屬於有著作權狀態，如加拿大（作者過世後70年）、中國大陸（作者過世後50年，港澳除外）、德國（作者過世後70年）、墨西哥（作者過世後100年）、瑞士（作者過世後70年）與其他已簽署個別協議的國家。更多資訊請參考Commons:Hirtle chart。 العربية ∙ Deutsch ∙ English ∙ español ∙ français ∙ galego ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ português ∙ português do Brasil ∙ русский ∙ sicilianu ∙ slovenščina ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/−

The August 1947 issue of The American Magazine was copyrighted in 1947 by Crowell Publishing (page 22) but not renewed:

• January–December 1975

Background
"Frank Leslie's Popular Monthly began publishing in 1876. In 1904, it was renamed Leslie's Monthly Magazine, and then Leslie's Magazine in 1905. Later that year (in the middle of volume 60), it was renamed the American Illustrated Magazine, shortening to the American Magazine in 1906. It kept continuous volume numbering throughout its history. The magazine ceased publication in 1956. While no copyright renewals are known for the issues, a number of stories that appeared in the magazine had their copyrights renewed."