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The Cosmos Club Historic Preservation Foundation Were dedicated to stewardship of the Cosmos Clubs historic building the Townsend House and to promoting preservation in the Dupont Circle and Massachusetts Avenue neighborhood. Read more The Cosmos Club Historic Preservation Foundation Were dedicated to stewardship of the Cosmos Clubs historic building the Townsend House and to promoting preservation in the Dupont Circle and Massachusetts Avenue neighborhood. Read more Where preservation and architecture come together Our Foundation was established in 1986 to maintain and preserve the Townsend House and its historic surroundings. The Townsend House The Townsend House is important both as the work of a renowned architectural firm and for its place in Washingtons history.