As of 2020, copyright has expired for all works published in the United States before 1926. In other words, if the work was published in the U.S. before January 1, 1925, you are free to use it in the U.S. without permission.
Learn the legal and ethical responsibilities required in the arts, audio/visual technology and communications workplaces. Guiding Questions - Do you have to file copyright? -What are the consequences of breaking copyright law?