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.
{{PD-Pre1978}} Image published in book prior to 1978: "1938 California Blue Book," Office of State Printing, Sacramento, Ca: 1938, page 56. No copyright indicated. Also, fair use argument: inferior scan quality.