The NYPL has posted metatdata about these collections on GitHub as well<p><a href="https:&#x2F;&#x2F;github.com&#x2F;NYPL-publicdomain&#x2F;data-and-utilities" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;NYPL-publicdomain&#x2F;data-and-utilities</a>