Snazzy!

  Deep in the jungle, a tribe of Indigenous peoples warriors are having a celebration. Their leader is a tall man in a white cloak. Secretly, he's really a Nazi commander, and the tribe's sacred temple is really an underground Nazi outpost. The Nazis eagerly await the arrival of an American convoy with information about an Allied attack. When a military plane flies overhead, the Nazis shoot it down. The commander sends the warriors to search for survivors. At the wreck site, the mortally wounded Lieutenant hands his secret documents to the crew's only survivor, Lois Lane. He tells her to destroy the documents. Then he dies. Lois is caught by the natives and tied up, but frees herself, runs into the jungle and avoids capture long enough to hide the documents under a rock. She is then captured and brought back to the temple for interrogation where she is tied to a chair. When she uses to talk, the commander orders the warriors to burn her at the stake. Meanwhil...

A mad scientist unleashes robots to rob banks and loot museums. Superman saves the day. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.

Lois and Clark are taken by a race of half-human, half-bird people who inhabit a complex of unexplored, underground caverns. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

Lois becomes trapped aboard an out-of-control train that is loaded with gold on its way to the national mint. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

Superman has his hands full trying to save both Metropolis and Lois when the city refuses a ransom demand from a gang. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

Superman versus a thawed-out Tyrannosaurus. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

A crook dressed as Superman commits a series of robberies. The real Superman must work fast to counter the bad publicity.   This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

Superman battles saboteurs determined to stop a lady double agent from getting important documents to Washington D.C. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

When America unveils its colossal new bomber, the JAPOTEURS, an elite force of Japanese spies & saboteurs, strike. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

Several Superman episodes from the World War II era. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

While Clark Kent is in wartime Japan, Superman becomes a saboteur. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

A mad scientist threatens to generate a gigantic earthquake that will destroy Metropolis. The citizens must abandon the city and return the land to the descendents of the original Native American inhabitants. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

Superman versus saboteurs at the Metropolis Munitions Plant. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

Superman must face the threat of an erupting volcano. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

A comet is out of control because a mad scientist pulled it closer in order to study it. The comet accelerates and the path leads to Earth. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.  

At the same time Lois is complaining that her assignment to cover the circus is boring, a circus monkey releases a giant gorilla. This work is in the  public domain  because it was published in the United States between 1926 and 1963 and although there may or may not have been a copyright notice, the  copyright was not renewed . For further explanation, see  Commons:Hirtle chart . 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 years  p.m.a. ), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.