A search for original registrations was done in both books and periodicals for the year 1966. There were no listings for Bernards, Bernardsville or Bernardian in either category. There's no evidence of original copyright on the yearbook.
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.
{{Information |Description=Photo of Meryl Streep as a cheerleader from the 1966 Bernards High School yearbook, The Bernardian. This was in her junior year of high school. |Source=[http://web.archive.org/web/20150124143212/http://www.ebay.com/itm/1966-M...