Lake County Historical Society
Lake Erie Nature & Science Center
Lake Metroparks
Lake Metroparks Farmpark
Lake Metroparks Lake Erie Bluffs
Lake Metroparks Painesville Township Park
Lake Metroparks Penitentiary Glen Reservation
Lake View Cemetery
Lakewood Historical Society - Oldest Stone House Museum
Liverpool Township Historical Society
Longwood Manor Historical Society
Lorain County Historical Society
Lorain County Metro Parks
Lorain Historical Society, Carnegie Center
Lorain Historical Society, Moore House Museum
Lorain Lighthouse Foundation, Inc.
Maltz Museum
Mantua Historical Society
Mayfield Township Historical Society
Medina County Historical Society
moCa Cleveland
Moreland Hills Historical Society
Museum of American Porcelain Art
Nature Center at Shaker Lakes
North Ridgeville Historical Society - Old Town Hall Museum
North Ridgeville Historical Society - One-Room School House
North Royalton Historical Society
Northern Ohio Railway Museum
Oberlin Heritage Center
Olmsted Historical Society
The Historical Society of Old Northfield
Parma Area Historical Society
Parma Heights Historical Society
Peninsula Foundation
Peter Miller House Museum-Heritage Avon Lake
Portage County Historical Society
