The 1966 Tarzan film was indeed made available on the Internet Archive, a digital library that provides free access to a wide range of films, books, and music. The film was released as an "Internet Archive Exclusive", making it easily accessible to a new generation of Tarzan fans.
To download, go to the DOWNLOAD OPTIONS section on the right side of a page: 1. To download single files, click the SHOW ALL link. Internet Archive tarzan 1966 internet archive exclusive