La classe en plein air fortifie l'enfant de´bile publie´ par la Croix-Rouge de Belgique ; reproduction autorise´e par la Comite´ national de defense contre la tuberculose.

Subject: Color poster with a reproduction of an unsigned color illustration, with a caption title in blue letters, of an open-air classroom. A young girl in a green and blue checkered skirt and red sweater stands and reads from a book. Another student, a young girl wearing a scarf, is seated at a desk and raises her hand. Two symbols of the Red-Cross appear at the bottom, as does the publication information. ; Translated title: An open-air classroom strengthens the weak child. ; C03828 ; 1 photomechanical print (poster) : col. ; 56 x 25 cm. ; Gift; William H. Helfand; December 1998.