Complex sentence: In the spring of 1923 Ludington imported two custom built Farman Sport airplanes made by W. Wallace Kellett of France and hired Robert Hewitt to pilot them at various demonstrations throughout the nation.
Split into simpler sentences: In the spring of 1923 Ludington imported two custom built Farman Sport airplanes made by W. Wallace Kellett of France. He hired Robert Hewitt to pilot them at various demonstrations throughout the nation.