Henry R. Rittenberg, American, 1879 to1969. Oil on canvas portrait of George P. Morgan. Labeled on the stretcher and signed on the canvas and dated 1914. Framed. Henry R. Rittenberg was born in Libau, Latvia and later immigrated to the United States. He studied art at the Bavarian Academy in Germany, and by 1906, was in Philadelphia, where he attended the Pennsylvania Academy of Fine Art. Rittenberg painted landscapes and still life works, yet his forte was portraiture. The artist was commissioned to paint a number of portraits of American dignitaries including Attorney General Homer Stille Cummings and a group portrait of President Harry S. Truman alongside British politician Clement Attlee and Joseph Stalin at the Potsdam Conference of 1945.