LIFE issues from Volume 16 Number 1 through Volume 18 Number 13 are in public domain as their copyright was not renewed. This issue is Volume 16, Number 25.

• 1971: copyright renewal for Volume 15
• 1972: absence of copyright renewal for Volumes 16 and 17
• 1973: absence of copyright renewal for the first half of Volume 18; copyright renewal resumes with Volume 18 Number 14

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