Roosevelt Park is a 217-acre park located in central east Edison, New Jersey, at Parsonage Road and U.S. Route 1, just west of Menlo Park Mall. Established in 1933 in what was then Raritan Township, the park is considered the oldest park in the Middlesex County Park System. It is owned and operated by the county government.
 On July 5, 1917, the Middlesex County Board of Freeholders authorized the purchase of 208 acres of land in Raritan Township for the construction of a county hospital for tuberculosis patients. According to The Guide to Edison Township, the purchased land was "free of population and free from any kind of buildings. The closest people to it was one farmer and the nearest populated area was downtown Metuchen". On April 7, 1919, NJ Assembly Bill 498, which sought to establish a bond to facilitate the funding of construction of the hospital, died in committee, leaving the prospects for a new hospital in doubt. There was discussion of selling the land purchased for a hospital. On October 10, 1923, the Middlesex County Recreation Association hosted a luncheon/meeting at the Hotel Klein in New Brunswick and received broad support from local agencies and state and local officials to create the county's first park on the lands once designated for the tuberculosis hospital. A fundraising campaign to construct a Kiddie Keep Well camp on part of the grounds of the new county park was conducted 7-14 September 1924.
 The Middlesex County freeholders established Roosevelt Park with funding from the Emergency Relief Administration in 1933 and subsequent improvements through the Civilian Conservation Corps (CCC) and the Works Progress Administration (WPA). Hundreds of CCC workers of the Second Corps Area (New York, Connecticut and New Jersey) trained at Camp Dix in the summers of 1934 and 1935 and were positioned at a camp seven miles west of Raritan train station, likely Raritan Arsenal. In particular, Company 1209 was trained by the US Army in forestry operations and worked in Raritan Township on CCC Project P-67 beginning August 8, 1935.
 The Middlesex County Board of Chosen Freeholders erected a large stone monument in 1933 dedicated to the park and the men of the county who built it. It is situated at the edge of the park along Route 1 North, just north of the Parsonage Road overpass, near the intersection of Lafayette Avenue and Roosevelt Drive. 
 The county tuberculosis hospital—Roosevelt Hospital—was built adjacent to and overlooking the park. The county received $575,000 in federal funding through the Public Works Administration and construction began on May 3, 1935. The hospital was dedicated on October 31, 1936, and opened March 8, 1937. The hospital was added to the National Register of Historic Places in 2002.
 Light Dispelling Darkness, a fountain designed by the sculptor Waylande Gregory, was sponsored by the WPA and unveiled in 1938. The theme of enlightenment through knowledge and science was inspired in part by the proximity of Menlo Park, where Thomas Edison invented the light bulb. The fountain is 15 feet high and 40 feet in diameter, with six symbolic groups representing "War", "Pestilence", "Famine", "Death", "Greed", and "Materialism". The fountain was restored in 2004 after falling into disrepair.
 The park provides a wide range of facilities for sports and recreation, including fields for baseball and soccer; picnic areas equipped with tables and bbq grills; miles of trails for bicycling, hiking, walking and jogging; courts for basketball and tennis; fishing at an eight-acre man-made lake; and a rink for ice skating or roller skating, depending on the season. 
 "The Level Playing Fields" provides dedicated sports facilities for people with physical and other special needs, including a fully equipped artificial-turf diamond with backstop, dugouts, and grandstands for spectators).
 The East Coast Greenway, a 3,000 mile long system of trails connecting Maine and Florida, goes through the park.
 Chapter 24 of the National Association of Civilian Conservation Corps Alumni and the Middlesex County Board of Chosen Freeholders erected a monument dedicated on 31 March 2003 recognizing the work of the Civilian Conservation Corps (1933-1942). The statue, nicknamed "Iron Mike", is a representation of the typical CCC worker, spade in hand. It is situated on Lafayette Avenue near the corner of US Route 1 North and Grandview Avenue.
 Two monuments dedicated to Marie Curie can be found on Elm Drive in the park, one erected in 1938 and the other in 1993. 
 The Middlesex County Veterans Memorial was unveiled on Veterans Day in November 2001. It consists of eight large concrete walls, six representing the various military services and two with dedications and memorials to the county's veterans, and a fountain with sculptures. 
 The Lakeview School and Rehabilitation Center for children with cerebral palsy is located within Roosevelt Park.
 The Kiddie Keep Well Camp was established in 1924 to treat children with tuberculosis.
 In the summer, the county sponsors various outdoor theater festivals, including "Plays in the Park" and "Music in the Park."
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