This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art. 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.
After research, I found that KRLA and/or The Beat did not mark any of this material with any type of copyright mark or other notification. The Beat was published from 1964 to 1968.
There are no copyright marks or notices on this issue of the newspaper nor on any issues of it.
The item can be dated by the publication of this edition of the newspaper shown above, 18 November, 1964.