The Negro spiritual "Michael Row the Boat Ashore" originated on Saint Helena Island in the 1860s. Leigh Richmond Miner photographed the island. A book of his photographs of the island was published in 1970. St. Helena Island was significantly impacted by the Sea Islands Hurricane of 1893, killing hundreds of residents on the island. The economic destruction of the hurricane lingered for decades after the event, causing St. Helena Island to be one of the poorest locations in the United States for many years. In the last decades of the 20th century, the improving economy in Beaufort coupled with resort development on nearby Fripp Island, Harbor Island and Dataw Island began to improve economic prospects for the island but also introduced development pressures that threatened the island's rural character. In order to stem the tide of gentrification, significant planning efforts have led to restrictive development regulations to ensure the island retains its rural character and preserves its cultural and historic resources. Condominium communities and gated communities are not allowed on St. Helena Island. Some rural land has been preserved through conservation easements and much of the island is still owned by African-Americans, much of it through heirs property arrangements. The Indian Hill Site and Knights of Wise Men Lodge are listed on the National Register of Historic Places. Geography St. Helena Island is considered an inland Sea Island and does not have actual frontage on the Atlantic Ocean. The island is surrounded by expansive marshes, particularly along the southeastern side of the island. It is the largest Sea Island in the Beaufort area and is the largest island between Edisto Island and Hilton Head Island along the South Carolina coast. The island is informally divided into several different communities, each with its own distinct identity. The two most established communities on the island are Frogmore and Lands End. Frogmore is considered to be the commercial center of island activity and is located in the north central portion of the island. For many years, Frogmore was the official name for the entirety of St. Helena Island by the U.S. Postal Service, and many on the island still refer to it as such. However, it is no longer the official U.S. Postal Service location name. It is officially Saint (St.) Helena, Island, S.C. Lands End (sometimes referred to as Fort Fremont) is a small community at the southern tip of the island