There are numerous organizations that are associated with Ringwood Manor in some way. Below, we have listed some of them along with links to their websites.

Park Information
                
New Jersey Division of Parks and Forestry
Ringwood State Park

Local Organizations & Friends Groups

The North Jersey Highlands Historical Society
The Friends of Long Pond Ironworks
The Ringwood Manor Association of the Arts
The Skylands Association
The NY/NJ Trail Conference

Institutions with Items or Exhibits Pertaining to the Cooper & Hewitt Families
    
Brooklyn Museum, Brooklyn, NY
Columbia University Archives, New York City, NY
Cooper Union, New York City, NY
Cooper Union Library and Archives, New York City, NY
Cooper-Hewitt National Design Museum, New York City, NY
Metropolitan Museum of Art, New York City, NY
Museum of the City of New York, New York City, NY
New York Historical Society, New York City, NY
The American Museum of Fly Fishing, Manchester, VT
The Henry Ford Museum, Dearborn, MI
The Library of Congress

Other Historical Organizations in New Jersey

The New Jersey Historical Society, Newark, NJ
The New Jersey State Archives, Trenton, NJ
The New Jersey State Library, Trenton, NJ
Passaic County Historical Society, Paterson, NJ
Rutgers University Library and Archives, New Brunswick, NJ
The Ringwood Borough Library, Ringwood, NJ
Trenton Historical Society, Trenton, NJ

---