Mayor Muriel Bowser and DC Health, COVID Situational Update Presentation, August 16, 2021 (Aug. 16, 2021) (Ex. DC-075)
Ballotpedia (secondary source), Ballotpedia, 'School responses to the coronavirus (COVID-19) pandemic during the 2021-2022 academic year' (Aug. 1, 2022) (Ex. ECO-B-107)
