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."

Pilsen: A Blending of Czech and Mexican American Communities, by the Neighborhood Service Association of Chicago

"'Cover of youth storybook and guide to neighborhood. Presents Pilsen as blending of Czech and Mexican American Communities.' The second sentence of the description from the above image titled, "Hello, Boys and Girls!" fully sets the stage for what follows. These photographs are courtesy of the Seven Settlement Houses-Database of Photos (University of Illinois at Chicago), University of Illinois at Chicago Library Special Collections and University Archives."