https://chroniclingamerica.loc.gov/lccn/sn86064187/1918-12-09/ed-1/seq-1/#date1=1918&sort=date&date2=1918&words=INFLUENZA&language=&sequence=0&lccn=&index=9&state=&rows=20&ortext=&proxtext=influenza&year=&phrasetext=&andtext=&proxValue=&dateFilterType=yearRange&page=1437

The Oklahoma City Health Commissioner has issued 10 commandments for avoiding the spanish flu, number one is using a handkerchief. The German premier asks for more troops to defend Berlin against the radical Spartacus movement.

Source: “Here Are ‘Ten Commandments’ for Avoiding the Influenza,” The Oklahoma City Times, Oklahoma city, Oklahoma, December 9, 1918. Page 1, Column 6.