You tried going to https://www.artsbma.org/wp/collection/castel-santelmo-with-naples-and-vesuvius-in-the-distance-from-voyage-pittoresque-ou-description-des-royaumes-de-naples-et-de-sicile-by-jean-claude-richard-abbe-de-saint-non/, and it doesn't exist. All is not lost! You can search for what you're looking for.