of Roswell, at South Spring Acres. At the time, it was the largest ranch in the United States. Van C. Smith, a businessman from Omaha, Nebraska, and his partner, Aaron Wilburn, constructed two adobe buildings in 1869 that began what is now Roswell. The two buildings became the settlement's general store, post office, and sleeping quarters for paying guests. In 1871, Smith filed a claim with the federal government for the land around the buildings, and on August 20, 1873, he became the town's first postmaster. Smith was the son of Roswell Smith, a prominent lawyer in Lafayette, Indiana, and Annie Ellsworth, daughter of U.S. Patent Commissioner Henry Leavitt Ellsworth. He called the town Roswell, after his father's first name. In 1877, Captain Joseph Calloway Lea and his family bought out Smith and Wilburn's claim and became the owners of most of the land of Roswell and the area surrounding it. The town was relatively quiet during the Lincoln County War (1877–1879). A major aquifer was discovered when merchant Nathan Jaffa had a well drilled in his back yard on Richardson Avenue in 1890, resulting in the area's first major growth and development spurt. The growth continued when the Pecos Valley Railroad arrived in 1892. During World War II, a prisoner-of-war camp was located in nearby Orchard Park. The German prisoners of war were used to do major infrastructure work in Roswell, such as paving the banks of the North Spring River. Some POWs used rocks of different sizes to create the outline of an iron cross among the stones covering the north bank. Later, the iron cross was covered with a thin layer of concrete. In the 1980s, a crew cleaning the river bed cleared off the concrete and revealed the outline once more. The small park just south of the cross was then known as Iron Cross Park. On November 11, 1996, the park was renamed POW/MIA Park. The park displays a piece of the Berlin Wall, presented to the city of Roswell by the German Air Force. Roswell was a location of military importance from 1941 to 1967. In 1967, the Walker Air Force Base was decommissioned. After the closure of the base, Roswell capitalized on its pleasant climate and reinvented itself as a retirement community. Roswell has benefited from interest in the alleged UFO incident of 1947. It was the report of an object that crashed