History: The use of masks during the Spanish flu pandemic, 1918. [626x960]

https://i.redd.it/5i9hw2cbs1e71.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/otmv43/the_use_of_masks_during_the_spanish_flu_pandemic/?utm_source=ifttt