PICTURE POSTCARD • FREE TRANSLATOR.ORG • Definition of Picture postcard

... eager for letters! Too many mothers feel that it is useless to write to their children during their first year away from them. They are so sure that no word from them can be understood that they content themselves with sending inquiries to the proper authorities, and an occasional picture postcard to the children themselves, and fail to realize how soon their little boy or girl grasps the fact that the other children have real letters in envelopes, and that these come from home, or how sharp a disappointment it is when day after day goes ...

— What the Mother of a Deaf Child Ought to Know • John Dutton Wright

... Grey of Falloden. The Tsar is usually depicted covered with vermin. The King of Italy as an evil-looking dwarf with a dagger in his hand. Only those who have seen the virulence of the caricatures, circulated by picture postcard, can have any idea of the horrible material on which the German child is fed. The only protest I ever heard came from the Artists' Society of Munich, who objected to these loathsome educational efforts as being injurious to the ...

— The Land of Deepening Shadow - Germany-at-War • D. Thomas Curtin