Links to the csv's we provided:
time_series_covid19_deaths_US.csv: https://github.com/CSSEGISandData/COVID-19/blob/master/csse_covid_19_data/csse_covid_19_time_series/time_series_covid19_deaths_US.csv
time_series_covid19_confirmed_US.csv: https://github.com/CSSEGISandData/COVID-19/blob/master/csse_covid_19_data/csse_covid_19_time_series/time_series_covid19_confirmed_US.csv
4.18states.csv: https://github.com/CSSEGISandData/COVID-19/blob/master/csse_covid_19_data/csse_covid_19_daily_reports_us/04-18-2020.csv
abridged_couties.csv: https://github.com/Yu-Group/covid19-severity-prediction/blob/master/data/county_data_abridged.csv: (Column Descriptions: https://github.com/Yu-Group/covid19-severity-prediction/blob/master/data/list_of_columns.md)