It's quite well documented. Try this site: https://liberalarts.vt.edu/news/articles/2020/08/virginia-tech-historians-uncover-the-facts-about-masks.html https:/

It's quite well documented. Try this site: https://liberalarts.vt.edu/news/articles/2020/08/virginia-tech-historians-uncover-the-facts-about-masks.html https://liberalarts.vt.edu/news/articles/2020/08/virginia-te...