It was the original copyright term in the United States, from the Copyright Act of 1790: https://en.m.wikipedia.org/wiki/Copyright_Act_of_1790 https://en.m.wiki

It was the original copyright term in the United States, from the Copyright Act of 1790: https://en.m.wikipedia.org/wiki/Copyright_Act_of_1790 https://en.m.wikipedia.org/wiki/Copyright_Act_of_1790