Fredrick Echols, M.D., Director of Health and Hospitals/Health Commissioner, Health Commissioner's Order No. 4 (Mar. 20, 2020) (Ex. MET-STL-005)
Metro Transit (Bi-State Development), Metro Transit COVID-19 Update: Face Coverings Required for Metro Transit Riders Starting on May 11 (May 5, 2020) (Ex. MET-STL-041)
