"Drawing by Carl von Hasenauer from February 17, 1851 showing roof structures and cross-sections of Paris, Ste-Geneviève, St-Philippe du Proule, and London's St. Catherine's Docks. Created with black and red ink, watercolor, and pencil."

Royalty-Free Standard Commercial licenses are granted for worldwide, non-exclusive and perpetual use, unless specifically noted otherwise. All Royalty-Free transactions are final. The Royalty-Free Standard Commercial license has no limitations and covers up to 15 users.