Boughton Place Inc

A nonprofit community center nestled in the Hudson Valley.

Martin House Learning Center Inc

Experience the harmony of nature and architecture in a living work of art.

• Historical Societies and Related Activities

• 39.

Martin House Restoration Corp.

Experience the harmony of nature and architecture in a living work of art.

• Historical Societies and Related Activities

• 40.

Erie Center for Design and Preservation

Places matter. The built landscape of Erie and northwest Pennsylvania is a tangible expression of our richly layered social cultural and industrial history.

Pittsburgh History & Landmarks Foundation

PHLF WORKS WITHIN A 250-MILE RADIUS OF PITTSBURGH, PENNSYLVANIA TO: IDENTIFY AND SAVE HISTORICALLY SIGNIFICANT PLACES; RENEW HISTORIC NEIGHBORHOODS, TOWNS, AND URBAN AREAS; PRESERVE HISTORIC FARMS AND HISTORICALLY DESIGNATED LANDSCAPES; AND EDUCATE PEOPLE ABOUT THE PITTSBURGH REGION'S RICH ARCHITECTURAL HERITAGE.

Friends of Poplar Hill Mansion Inc

The Friends of Poplar Hill Mansion, Inc.

• Historical Societies and Related Activities

• 43.

GORDON HOUSE CONSERVANCY INC

The Gordon House, Frank Lloyd Wright's only design built in Oregon.

• Historical Societies and Related Activities

• 44.

THE HEGELER CARUS FOUNDATION

We are a 145 year old National Historic Landmark.

Kelleys Island Historical Assoc Inc

This is the home for Kelleys Island history.