Dear Ms. Allen,
Thank you for posting your request on History Hub!
We are unaware of a comprehensive list of individuals, either for the United States as whole or for Cantonsville, Maryland specifically, who died of the influenza epidemic that began in 1918. Maryland death records for this time period are in the custody of the Maryland State Archives. They provide online indexes for these records, however the indexes are arranged by surname rather than geographic location, list county rather than town, and do not give cause of death. Please contact the Maryland State Archives for more information about their holdings. Please note that, per the notice on their website, they are currently closed due to the COVID-19 pandemic.
Another potential source of information is searching back issues of local newspapers. Please review the Library of Congress’s Chronicling America for information about locating historic newspapers.
We hope this information is helpful. Best of luck with your research!