Title: Vallotton, Manguin, Hahnloser
Subjects: Correspondence, Painters, Art, Collectors and collecting
Places: France, Switzerland
People: Félix Vallotton (1865-1925), Henri Manguin (1874-1949), Hedy Hahnloser-Bühler (1873-1952), Arthur Hahnloser-Bühler (1870-1936)