Cough! Cough! Cough! Hack! Hack! Hack! Bark! Bark! Bark! : why do you cough?.

Date:
[between 1930 and 1939?]

Licence: In copyright

Credit: Cough! Cough! Cough! Hack! Hack! Hack! Bark! Bark! Bark! : why do you cough?. Source: Wellcome Collection.