A Very Large Early 20thC Educational Lithograph on Board; A Cross Section of the "Healthy Heart"Origin: English Period: Early Twentieth Century Provenance: Unknown Date: c. 1910 20 Height: 40 inches Width: 34 inches Condition: C The large sized lithograph mounted on board boldly illustrates a cross section of the human heart, showing in clear detail, the Healthy Heart, with the posterior and the anterior views. The board is in fair overall order with some watermarks and foxing to the whole, mainly to the outer borders, though for an educational