The Days of Real Sport — Spanish influenza and World War I, in American newspapers

"Those gauzy masks the barbers wear — what but the flu has put them there? Now, if the thing be handled rightly, the curb applied a bit more tightly, the flu be thanked! We solve that puzzle; how fit the barber with a muzzle. The mask that stops that fell ker-choo shall still the fluent barber, too."