Preservation Action was created in 1974.
Heritage Preservation was created in 1973.
The Preservation Trust of Vermont was created in 1980.
Digital Preservation Coalition was created in 2001.
OakView Preservation Incorporated was created in 2007.
Oxford Preservation Trust was created in 1928.
Preservation Society of Charleston was created in 1920.
Preservation of the Sign Language was created in 1913.
Dartmoor Preservation Association was created in 1883.
Law Preservation Party was created in 1930.
Oceanic Preservation Society was created in 2005.
National Preservation was created on 2008-06-25.
National Preservation Party was created in 1953.