Louisiana Landmarks Society (LLS) is a preservation advocacy organization, established in 1950. With founders such as Samuel Wilson, Jr. and Martha Robinson, Landmarks rapidly defined preservation advocacy in New Orleans by leading the charge to preserve Gallier Hall in 1950 and defeat the proposed Riverfront Expressway a decade later. Today, the spirit of the organization’s founders lives on in the LLS Advocacy Committee, which has taken on a wide-range of land use and development matters—Confederate memorial removal, public housing demolition, school closures, destructive economic development, short-term rentals, and Industrial Canal and port expansion. LLS is known throughout Louisiana for its annual “New Orleans’ 9 Most Endangered” listing of at-risk historic properties, and Historic Preservation Awards for building professionals. LLS is also a partner of the National Trust for Historic Preservation, as the steward of a National Treasure, an 18th century Pitot House.