Three new books on Marie Meierhofer, the wife of Albert, the director of a Bronze industry in Switzerland, "Bronzewarenfabrik AG", BAG, powered with an hydroelctric station. The first book gathers their private correspondance on amazing old post cards at the beginning of the 20th Century. Then a book on Marie, the artist, who created Ex Libris and also collected them. Ex Libris were often created until the beginning of the 20th century, as book-plates.The others skills of Marie was to launch a famous Art Competition for the children and teanagers, in this third and last book, you could discover incredible drawings gather for art lovers.