roof. The light was equipped with a sixth order Fresnel lens that showed a light 67 feet above sea level and was visible for 12 nautical miles. According to lighthouse historian Jeremy D’Entremont, “A fog siren was installed at Pomham Rocks in 1900. One newspaper called the new signal, "The Greatest Nuisance in the State." As complaints from local residents mounted, the continuous horn was soon changed to a three-second blast at 12-second intervals. Three years later a fog bell replaced the siren.” Due to its location on a rock 800 feet from shore, the lighthouse was slow to receive normal upgrades such as electricity and telephone. In fact, the lighthouse never did receive running water. It wasn’t until the late 1950s that electric was provided to the lighthouse. Prior to that, the refrigerator and stove ran on kerosene and a windmill supplied power for a radio. The light’s lens was upgraded to a fourth order in 1939 and remained in use until the beacon was automated in 1974. The lens is now on display at the Custom House Maritime Museum in Newburyport, Massachusetts. Mobil Oil Company purchased the