Oscillating Engines 260 HP Black Eagle by Penn and Sons By Melanie | November 17, 2013 Oscillating Engines 260 HP Black Eagle by Penn and Sonsfrom Artizan circa 1844 Oscillating Engines 260 HP Black Eagle by Penn and Sonsfrom Artizan circa 1844 Posted in CC License and tagged 1840, 1844, Black Eagle, Engineering, Oscillating Engines, Penn and Sons ← Twas the Night Before ChristmasArtizan Magazine Cover circa 1870 →