Link to WaPo opinion piece (no paywall) https://archive.ph/mR9iU

Link to Cochrane review on masking https://cochranelibrary.com/cdsr/doi/10.1002/14651858.CD006207.pub6/full

Links to University of Minnesota commentaries https://cidrap.umn.edu/covid-19/commentary-wear-respirator-not-cloth-or-surgical-mask-protect-against-respiratory-viruses

https://cidrap.umn.edu/covid-19/commentary-what-can-masks-do-part-2-what-makes-good-mask-study-and-why-most-fail

Link to fatally flawed CDC study https://www.cdc.gov/mmwr/volumes/71/wr/mm7106e1.htm