The yearbook has no copyright markings on it. Also, there is no copyright registration either. Therefore, it lapsed into public domain. Colorization was done using MyHeritage in Color™.
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.
Uploaded a work by {[w|New Utrecht High School}} from [https://www.myheritage.com/research/record-10569-229519453/steven-hoffenberg-in-us-yearbooks-name-index Comet - June '62] (Page 82) with UploadWizard