This work was first published in Kenya and is now in the public domain because its copyright protection has expired by virtue of the The Copyright Act 2001 (details). The work meets one of the following criteria:
It is an anonymous or pseudonymous work and 50 years have passed since the date of its publication
It is an audiovisual, photographic work or a broadcast, and 50 years have passed since the date of its publication
It is a sound recording, and 50 years have passed since the date of its creation
It is literary, musical or artistic work created pursuant to a commission from the government, and 50 years have passed since the date of its publication
It is literary, musical or artistic work, and 50 years have passed since the year of death of the author (or last-surviving author)
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.