Statue of Liberty of War; since 1933 it has been maintained by the National Park Service. Public access to the balcony around the torch has been barred for safety since 1916. According to the National Park Service, the idea for the Statue of Liberty was first proposed by Édouard René de Laboulaye, president of the French Anti-Slavery Society and a prominent and important political thinker of his time. The project is traced to a mid-1865 conversation between de Laboulaye, a staunch abolitionist, and Frédéric Bartholdi, a sculptor. In after-dinner conversation at his home near Versailles, Laboulaye, an ardent supporter of the Union in
Statue of Liberty of the copper skin over decades, leaving two layers of coal tar, originally applied to plug leaks and prevent corrosion. Blasting with baking soda powder removed the tar without further damaging the copper. The restorers' work was hampered by the asbestos-based substance that Bartholdi had used—ineffectively, as inspections showed—to prevent galvanic corrosion. Workers within the statue had to wear protective gear, dubbed "moon suits", with self-contained breathing circuits. Larger holes in the copper skin were repaired, and new copper was added where necessary. The replacement skin was taken from a copper rooftop at Bell Labs, which had a patina that