While researching a topic, a student has taken the following notes:
- Lighthouses send out crucial light signals to help ships and other watercraft navigate at night.
- Before automation, lighthouses were run by lighthouse keepers.
- Maria Younghans was the lighthouse keeper at Biloxi Light in Mississippi.
- She held this position for fifty-one years (1867–1918).
- Catherine A. Moore was the lighthouse keeper at Black Rock Harbor Light in Connecticut.
- She held this position for sixty-one years (1817–1878).