Thomas Ashby and Cecil Weatherly, 1911 Encyclopædia Britannica, Volume 18… (1911)
“ In many cases, unfortunately, a valuable monument has been destroyed through ignorance of its value. A special form of inventory, carrying with it legal consequences, is that known as the classement system; of this form the French is the typical example. In this only the outstanding monuments find a place, and such either become national property altogether, or the protection and preservation is undertaken by the state, or may be left in the hands of the private owner ”
