Each year since 1988, the National Trust for Historic Preservation has issued its list of America’s most endangered historic places , spotlighting sites at risk from neglect, climate change, and development. This year, Stonewall National Monument in New York City is among them. The National Trust’s endangered list is often associated with crumbling facades or vulnerable landscapes. Stonewall, by contrast, reminds us that history can also be endangered by something less visible but equally