There is a GPL v.1, and it may have been so numbered at initial publication: <https://www.gnu.org/licenses/old-licenses/gpl-1.0.html https://www.gnu.org/licens

There is a GPL v.1, and it may have been so numbered at initial publication: <https://www.gnu.org/licenses/old-licenses/gpl-1.0.html https://www.gnu.org/licenses/old-licenses/gpl-1.0.html>