No; episodes would be protected for 95 years from release.
No; they are all protected by copyright.
The character of Superman is trademarked and so long as it is "vigorously defended" and does not attain generic status through dilution, can be maintained virtually forever.The copyrights to the expressions of the various Superman entities (comics, cartoons, movies, radio programs) are, in most cases, owned by the original artists/authors (a notable exception is the Max Fleisher Studio cartoons, which were not renewed and have lapsed into public domain status). Those copyrights will eventually reach the public domain but not for some time. Under current US Copyright Law the artwork for the original appearance of Superman (Action Comics #1 June 30, 1938) is not scheduled to be in the public domain until 2033 (95 years post publication).The time before something goes into public domain is generally twenty years. However, time is not the only factor involved. If the publisher, artists, creator, movie company, or anyone else renews the copyrights or trademarks, then it will be that much longer. Pretty much, as long as Superman continues to be a large source of income, there will be someone renewing the rights keeping it from going into public domain.
Episodes that were properly renewed are controlled by MGM; however, some episodes were not renewed and have entered the public domain.
The original text of "Alice's Adventures in Wonderland" by Lewis Carroll is in the public domain, as it was published in 1865 and its copyright has expired. However, certain adaptations, illustrations, and other derivative works may be protected by copyright held by the respective creators or publishers.
No, the TV series "Thriller" hosted by Boris Karloff is not in the public domain. The copyright for the series is still held by its creators and/or rights holders, so permission would be required to use or distribute the episodes.
One can find pictures of puppies that are considered to be in the public domain on public domain picture collection websites. These are a few of those: Wikimedia, PublicPhoto, Pixabay, PD photo, Photos Public Domain, Picdrome, Alegri Photos, Free Photo Gallery, Public-Domain-Photos, 4Free Photos, Free Stock Image Site, Public Domain Files,Public Domain Depot, Open Galleries, Free Images Collection, Free Digital Photos, Public Domain Photo, Project Public Domain Pictures.
Union for the Public Domain was created in 1996.
Yes, Shenandoah is public domain.
Center for the Public Domain was created in 1999.
Public Domain pictures are images, photographs, or pieces of art that are free from copyright regulation; this makes them public domain. Companies such as Public Domain Image and Public Domain Pictures offer access to images for free. Other great companies are USA government website, as many of their images are public domain, and PD Images.
Yes - all questions and answers on this site are in the public domain. Even your profile is in the public domain (though only you can edit it !)