an Entity references as follows:
The Fleischer Superman cartoons are a series of seventeen animated short films released in Technicolor by Paramount Pictures and based upon the comic book character Superman, making them his first animated appearance. Although all entries are in the public domain, ancillary rights, such as merchandising contract rights, as well as the original 35mm master elements, are owned today by Warner Bros. Entertainment, which has also owned Superman's publisher, DC Comics, since 1967.