U.S. Census Bureau... twitter.com

Covid in the U.S.: Latest... www.nytimes.com

reported-deaths-from-covid-... www.statista.com

Tracking covid-19 excess... www.economist.com

Widespread outbreaks of... www.cdc.gov

Eric Feigl-Ding... mobile.twitter.com

Average Energy Prices, Los... www.bls.gov

US COVID Tracker - Covid... covidactnow.org

Coronavirus (COVID-19)... ourworldindata.org

Antonio Fatas on Twitter:... twitter.com

covid-deaths-distribution-b... www.statista.com

United States Nahb Housing... tradingeconomics.com

EX-99.1 www.sec.gov

Prevalence and risk factors... www.nature.com

United States: Coronavirus... ourworldindata.org

U.S. Census Bureau... twitter.com

Children and COVID-19... www.aap.org

covid19-cases-percentage-by... www.statista.com

U.S. Census Bureau... twitter.com

Coronavirus (COVID-19)... ourworldindata.org