The Almshouse of Suffolk County

Baldwin Historical Society and Museum

The Bellport-Brookhaven Historical Society

Bridgehampton Museum

The Bryant Library Local History Collection

The Friends of Cedarmere

Cow Neck Peninsula Historical Society

The Historical Society of East Rockaway and Lynbrook (HSERL) 

Freeport Historical Society and Museum

Glen Cove Public Library 

Hallockville Museum Farm

Huntington Historical Society

Long Beach Historical Society and Museum 

Mattituck-Laurel Historical Society and Museum

Miller Place -- Mount Sinai Historical Society

Northport Historical Society

Oysterponds Historical Society

Greater Patchogue Historical Society

Historical Society of Greater Port Jefferson

Preservation Long Island

Railroad Museum of Long Island (RMLI)

Friends of Raynham Hall

Sag Harbor Historical Society 

Shelter Island Historical Society

Southold Historical Museum

Straus Historical Society

Suffolk County Historical Society

The Suffolk County Vanderbilt Museum 

Westhampton Beach Historical Society

Yaphank Historical Society