Another magical miracle worker was Fleury-Joseph Crepin , a French artist -LRB- 1875-1948 -RRB- whose small , symmetrical abstract work of 1939 at the J. P. Ritsch-Fisch Galerie of Strasbourg , France , is the long-sought first of a series of 345 '' mediumistic '' paintings done by the artist in an attempt to stop World War II .