Calling the Cows Home, ca. 1872, Oil on wood, 37 1/4 x 25 1/2 in. (94. 6 x 64. 8 cm), Paintings, Jean-Francois Millet (French, Gruchy 1814?1875 Barbizon), Millet mentioned this painting in a letter of August 1872 to his friend and biographer, Alfred Sensier: 'I've groaned more than I've worked, since I've done hardly anything but a sketch. You know the subject, a cowherd sounding his horn to collect his cattle at the end of the day