PBS Documentary on 1918 Flu Pandemic (Spanish Flu)
"All of America, it seemed, put on masks. At last, many thought, they were safe. But masks didn't help. They were thin and porous -- no serious restraint to tiny microbes. It was like trying to keep out dust with chicken wire."
"A resolution shot through Congress, giving the Public Health Service a million dollars to fight the flu. Biochemists around the country worked feverishly to develop a vaccine. [...] But even vaccines didn't help."
https://www.pbs.org/wgbh/americanexperience/films/influenza/#transcripthttp://archive.today/IYjlo
This resource is a gold mine. Start by printing the CDC flyer that clearly states "do not use facemasks" and go from there.
https://pastebin.com/5xEMa5P7
And this:
PBS Documentary on 1918 Flu Pandemic (Spanish Flu) "All of America, it seemed, put on masks. At last, many thought, they were safe. But masks didn't help. They were thin and porous -- no serious restraint to tiny microbes. It was like trying to keep out dust with chicken wire." "A resolution shot through Congress, giving the Public Health Service a million dollars to fight the flu. Biochemists around the country worked feverishly to develop a vaccine. [...] But even vaccines didn't help." https://www.pbs.org/wgbh/americanexperience/films/influenza/#transcript http://archive.today/IYjlo