Pennell, PEHN uhl, Joseph (1857-1926), was an American printmaker. Pennell became best known for his lithographs and etchings, but he also created silk-screen prints, engravings called mezzotints, drawings, and water colors. Pennell experimented with various inks and antique papers to produce unusual effects in some of his prints. His most famous works include lithographs of factories, New York City skyscrapers, and scenes of the construction of the Panama Canal.